Dennis eludes a babysitter to go to the movies that his parents are at.

Dennis replaces a fallen signpost... backwards.

Henry and Mr.Wilson try to go fishing without Dennis.

Dennis tries to fix his Grampa Perkins up with Miss Cathcart.

Mr. Wilson thinks he has discovered a space satellite.

Mr. Wilson's garden originally consisted of Dahlia bulbs. When Dennis sees them, he thinks they are ""sweet potatoes"" and after his bedtime, he ""secretly exchanges"" what is in his garden with what is in Mr. Wilson's garden. Dennis eventually raises the Dahlia bulbs & wins a 1st prize medal. After the garden judges see Mr. Wilson's garden, he is also given a medal.

Dennis helps Mr Wilson sell a neighbors house.

Dennis and Tommy camp out in the back yard. Dennis' parents friends The Melton's play a record containing wild animal sounds to entertain the boys while they are camping out in the yard. Mr. Wilson can hear the record from his house and is convinced that wild animals have escaped from the circus and are after the boys so Mr. Wilson goes out to the yard to try and save Dennis and Tommy from danger.

Dennis thinks his dad is broke so he sells bottles to try and help his dad out. However, when Dennis tells some of the neighbors what he is doing the neighbors get the wrong idea about the Mitchell's and think that they are in trouble financially.

Dennis starts a rumor that him and his family are moving to New York only to keep Mr. Wilson in town to get his award.

Dennis is going crazy trying to find his gifts.

Dennis meets Whip Crawford his cowboy idol after Mrs Webster tells Dennis he will be in the play.

Dennis Haunts Mr. Wilson's house due to him and his friends starting a club house in Mr. Wilson's basement.

Mr. Wilson attempts to teach Dennis about bird watching, then Dennis takes care of a sick bird

George Wilson is looking for a rare coin. But George is in for a sad shock $250.00 (that's what he paid for the coin) But the coin is fake!

To get a bike Dennis sells a fishbowl of beans which he has to count before 5pm!

The Mitchell's are having a party and the guests are late, So Dennis tries to help people find the house by taking an open House for Free!

Dennis's duck (George) causes problems for Mr. Willson who is running for The Garden Club. He tries to get the duck to the lake.

Henry tries to take Alice out on their Anniversary. Meanwhile Dennis tries to build a swing in his yard and ends up chasing a cat up a tree in the process.

Dennis cares for a dog named Charlie who wins a prize for his painting!

Dennis meets Helen and wants to be pirate.

Dennis goes to any length to get a TV and turns Mr. Wilson's tv on!

Dennis asks a reporter to write a story about his dad with hopes of getting his picture in the paper.

Mrs Holland tells Dennis that anyone who collets the most newspapers will win a silver dollar made in 1895 that is worth $600 which catces Mr. Wilson's eye.

Dennis learns Opie might leave because his bees have no honey. Dennis sprays prfume on Mr. Willison's flowers.

Dennis puts a sign in Mr. Finch's store telling everybody not forget his mom's Birthday.

Dennis's parents hire a baby sitter while his parents entertain business client. Dennis is a baby sitter to Michael Bouchet, was asked to stay with Dennis.

Mr. Wilson has a bunch of starlings in his tree and wants to get rid of them. Dennis eventually gets rid of the starlings by putting liver in Mr. Wilson's tree which attracts a lot of cats.

The Driscolls are new neighbors but the Driscoll's phone is on the same line as the mitchell's.

Dennis builds a bench for Mr. Dorfamn to sit on.

Dennis tries to walk to his Grandpa's house and the police stop him and try to figure out who he is.

Dennis sells Valentine's Day cards in July to by swim fins, which end up causing a run on Valentine's day cards around the entire neighborhood.

Mr. Wilson gets a visit from his former boss who offers him his job back in Pittsburgh. When Dennis thinks Mr. Wilson is moving to Pittsburgh, he runs away from home.

Mr. Wilson's Niece is getting married and asks Dennis to be the ring bear.

Mr. Wilson gives Dennis an old radio set that he mistakenly bid for at an auction. However, When Dennis finds money in his radio set, Mr. Wilson gets excited. So him and Mitchell put in add in the paper hoping the real owner isn't around to claim it.

Dennis gets what he thinks is a hampster which turns out to be a gopher that escapes from his cage and almost ruins Mr. Wilson's yard.

Mr. Wilson has a stock certificate worth $500. He hides it in his Phone book, however when Dennis brings him in his new phone book Mr. Wilson goes crazy and ends up going to the warehouse where all the old phonebooks are taken to look for his old phone book because he thinks the stock is still in it.

Dennis tries to take care of his mom because she is sick and his dad is out of town.

Dennis starts a rock collection and ends up finding what he thinks is real gold on Mr. Wilson's lot

Mr. Wilson tricks Mr. Mitchell out of playing golf to spend more time with Dennis.

Dennis wants to help out for Paint-up, Clean-up week. So Mr. Wilson gives Dennis a bucket of red paint to paint his wagon with. Dennis however also decides to paint the street curve by Mr. Wilson's house and Mr. Wilson gets blamed for it.

Dennis is very upset because he doesn't know how to whistle, So he spends all day trying to learn how.

Dennis gets an electric car for his mom from the lady who won the Raffle.

Dennis is determined to get a horse for Christmas, So on Christmas day he goes around the neighborhood trying to find what he thinks is his horse.

Dennis is trying to learn about how to earn money by working. His dad eventually starts him on an allowance.

Mr. Wilson Helps Dennis start a penny collection, However Mr. Wilson fears that Dennis having a penny collection is going to be trouble to him.

Dennis convinces Mr. Wilson to run for park commissioner because the playgroung is closed except on weekends.

Dennis attempts to find Miss. Cathcart a best friend, so he gets her a dog from the pound. However the dog's owner is looking for him and ends up showing up at Miss. Cathcart's house before Dennis brings the dog over to Miss. Cathcart. So she mistakenly thinks that the guy is the friend instead of the dog.

Dennis writes a composition for school on his best friend and he chooses Mr. Wilson to write about.

Tommy has a saxophone that he doesn't want so Dennis wants to buy it from Tommy's Mother, but when Mr. Wilson learns that Dennis is going to ask his father to buy it for him Mr. Wilson tries to talk Dennis's dad out of getting the saxophone.

Dennis accidently knocks over a bottle which fumigates the Wilson's house, So the Wilson's stay the night at the Mitchell's and Mr. Wilson walks in his sleep.

Mr. Wilson puts on a magic show for Dennis' birthday and asks Spring Byington to be his assistant

Mr. Wilson takes Dennis and his friends to a camp to visit for a day and end up getting stranded there for a week because a bridge went out due to a storm.

Miss Cathcart's cat is accidentally locked in the trunk of Mr. Wilson's car.

Dennis gets his mom a going away present and hides it on Mr. Wilson's closet shelf and Mrs. Wilson finds it and thinks it's a gift from Mr. Wilson.

Dennis attempts to buy a fishing rod for his dad and tries to purchase it with a $50.00 Confederate bill.

Dennis brings home little chicken eggs to take care of for his school project, but ends up taking them over to Mr. Wilson's house because the Mitchell's electricity went out.

Dennis trains Mr. Wilson's dog Fremont, which backfires when Fremont will only listen to Dennis and ignores Mr. Wilson.

Mr. Wilson has a hundred doller bill which he drops and a crow picks it up and flies away with it. He later finds it in an old tree in a park which the park commissioner is going to cut down, So Mr. Wilson climbs the tree to get his hundred doller bill and to also save the tree from being cut down.

Mr. Wilson builds a barbecue in his backyard with help from Dennis' friend, Fred Bains.

Dennis enters a soapbox derby and Mr. Wilson accidently ends up being the one driving it in the race.

Mr. Wilson is supposed to take a picture of a plant that bloomes at night but ends up dozing off when it bloomes, So Dennis takes the picture of the plant for him.

Dennis accidently steps on one of Mr. Wilson's plants and so he buys him a replacement and plants it in Mr. Wilson's flower bed. When Mr. Wilson sees it, he is convinced that his new miracle plant food that he invented works like a miracle.

Dennis overhears Mr. Wilson saying that he wishes he had his racoon coat back, so he gives the story to the newspaper and so all day people are bringing Mr. Wilson racoon coats.

Mr. Wilson wants to go to Mexico to the Island of Happiness but changes his mind when he hears that his Neice is going to have a baby at the time when he was going to go.

Mr. Wilson gets a fortune cookie of which sais ""Beware Of Tomorrow"" and so he is convinced that the fortune will come true.

Dennis, Mr. Wilson, Mr. Mitchell camp out as pioneers to prove to Mr. Krinkie that they can live of the land like the pioneers.

Dennis decides to give Mr. Wilson his own father's day, Which in the end turns out for the best when Dennis gets Mr. Wilson out of a lawsuit concerning his dog, Fremont.

Henry finds a bag of money in the rain gutter, So he calls Mr. Wilson and they take it to the police station. They later learn that the money is counterfeit.

Mr. Wilson accidentlly gets a space helmet that belongs to Dennis stuck on his head.

Dennis and Mr. Wilson camp out on a moutain so that Dennis can join the Junior Pathfinders club.

Henry gets a ticket for walking on the grass in the park. When Mr. Wilson hears about it he thinks it isn't fair, So he convinces Henry to go to court and contest it.

Dennis is using numbers for a football play which is the combination to Mr. Wilson's safe, So Mr. Wilson and Henry get Dennis so confused that he forgets the combination. Then Mr. Wilson forgets it. Now they are in a real mess because Mr. Wilson has something very important locked in the safe. So Mr. Wilson tries everything including trying to hypnotize Dennis so he can remember the combination. He ends up hypnotizing himself and remembers the combination at last.

Mr. Wilson and Henry both invest in a house that is known to be a haunted house.

Dennis' school is putting on a play which Mr. Wilson ends up being in (not by choice) because him and Tommy (who is also in the play) get handcuffed together before the play starts.

Mr. Finch is having a contest that when the fifty-thousandth customer walks in his store they will win 5 minutes of free shopping of which Mr. Wilson is determined to be the one who wins.

Mr. Wilson coaches Dennis' Pee Wee League baseball team because Dennis' dad (who originally was the coach) got sick.

Mr. Wilson wants to represent Scotland for Dennis' School

The school test scores mistake Dennis as a genius.

Mr. Wilson tricks Dennis into taking a silver coin that says GOOD LUCK and a horseshoe on it instead of 50 cents that he owes him for cutting his lawn. Mrs. Wilson is very angry with him about it. So, she and Alice start a scheme of their own by making lucky things happen to Dennis all day. Mr. Wilson soon starts to believe that the coin was lucky after all and is sorry he ever let it go. He then realizes that it was all a charade to teach him a lesson.

Dennis, Henry and Mr. Wilson go out in the woods and cut down a big Christmas tree which ends up getting almost destroyed by the time they get it home.

Dennis opens a bank account at the bank of where Mr. Wilson works at and causes a lot of chaos at the bank.

Dennis' cub scouts are putting on a circus of which Mr. Wilson is the Lion in the circus, which is suppose to be a secret from everyone.

Mr. Wilson holds a bird lovers session at his home Where a woman does bird calls that sounds just like a bird.

Mr. Wilson agrees to give Dennis his magnifying glass if he doesn't talk around him for the day.

Dennis is put on the spot when he askes both Mr. Wilson and Mr. Mactavish to represent Scotland in his school project.

Dennis enters his frog in the frog jumping contest with Mr. Wilson as his partner who has a bet with Sgt. Mooney that Dennis' frog will beat his.

Mr. Wilson gives Dennis a Gold watch in his will. Soon after that Mr. Wilson begins to feel old and is convinced that he has short time to live.

Mr. Wilson's Uncle comes to visit him and convinces him that he isn't in shape, so he starts a physical fitness program and forces Mr. Mitchell and Mr. Wilson to be in it.

Mr. Wilson plans to have a quiet evening at home, but his plans change when Henry needs a sitter for Dennis.

Mr. Wilson gets his wallet taken by a pick pocket, So Dennis and Tommy try to find the crook for the police.

Mr. Wilson hires a housekeeper for Mrs. Wilson but soon regrets it when the housekeeper tries to tell Mr. Wilson what he can and can't do in his home. Mr. Wilson then tries to get rid of her.

A big shaggy dog followes Mr. Wilson home and Mr. Wilson tries to get rid of it.

Dennis does a documentary film of the town for a school project with Mr. Wilson's help.

Mr. Wilson takes Dennis and his friends up to the lake and back in an old car. Mr. Wilson then gets elected president of the Horseless Carriage Club.

Mr. Wilson attempts to start a fire like the pioneers did for Dennis' Junior Pathfinders club and nearly burns down the place.

Mr. Wilson buys a treasure chest at an auction thinking that it has buried treasure in it. Mr. Wilson later discovers a treasure map drawn by Dennis. Although Mr. Wilson thinks the map is authentic so he plans to take a trip to the island and dig for the treasure.

Dennis convinces Mr. Wilson to go to the Dentist for his tooth because Dennis thinks he can get a basketball from the Dentist until he learns that the Dentist only gives away prizes to child patients.

Mr. Wilson thinks his next door neighbor is the stocking bandit and tries to prove it.

Mr. Quigley coaches Dennis' baseball team with help from Sandy Koufax.

Dennis helps Mr. Wilson's Uncle Ned plant flower bulbs in his yard in order to get out of playing house with Margaret Wade.

George Wilson's brother John Wilson comes to visit, only he has trouble working without his old cushion.

Dennis and his friends win John Wilson a chicken, which John wants to cook for dinner and the children try to talk him out of it.

Dennis is all set for a big day. He is scheduled to have a fight with Gifford - the school bully.

Dennis wants to join an older boys club, but in order to do so he has to take an initiation.

The Neighborhood Community puts on a carnival in the park with different winning contests to participate in.

Mr. Wilson is doing a magazine article on voodoo, Dennis gets the wrong idea and tells the whole neighborhood that Mr. Wilson is a Witch Doctor, Soon the whole town gets the wrong idea about Mr. Wilson.

Mr. and Mrs. Wilson have a Chinese girl that is staying with them while Mr. Wilson is interviewing the girls father for a magazine article.

Dennis hears Mr.& Mrs. Wilson argue and spreads it around the Neighborhood and soon some of the neighbors think that the Wilson's have split up.

Dennis gets a job for a day delivering Circulars for Mrs. Elkins. But, When he swaps territories with another kid, he gets blamed for throwing the circulars in a trash can.

It's Children's Day in Court, and Dennis is the Judge! Mr Wilson goes to court to dispute a ticket he received for violating a city ordinance.

Dennis thinks that Mr. Wilson is broke so he tries tries to help him out.

Mr. Wilson gets mixed up with Gypsyes and they think he is one of them.

Dennis gets a new Principal, Mr. Spivey who is very strict at his school. Mr. Spivey and Dennis get off on the wrong foot at first However, Johnny Brady takes note of that and because he wants to be on the pitcher on the school baseball team. So, he sets Dennis up by drawling a picture on the back of his paper making fun Mr. Spivey's height. When Mr. Spivey finds it he naturally assumes Dennis is the one that drew it so he punishes Dennis by kicking him off the baseball team and keeping him after school. As the news travels Mr. Wilson, Mr. Quigley and Mr. Finch all go to the school a few minutes apart and talk to Mr. Spivey each claiming to be Henry Mitchell to stand up for Dennis. Mr. Spivey gets confused but soon realizes he misjudged Dennis and ends up apologizing and putting Dennis back on the school baseball team.

Mr. Wilson gets a chimpanzee from the San Diego zoo which causes chaos at the Motel that the Wilsons and the Mitchells are staying at.

Mr. Wilson's nephew visits him and gives Mr. Wilson and Dennis a ride in his navy truck and then Mr. wilson and Dennis get trapped on the navy base.

Henry is thinking of getting a new job which takes place neer the Asian river. Dennis does what he can to prevent it including running away from home.

Mr. Wilson hangs out and plays with Dennis and his friends the whole day to gather information for a magazine article of what young children do in this day and age.

Mr. Wilson is doing a column for the newspaper that he thinks will have every single women in town happily Married. However, it ends up getting Sgt. Mooney in a love triangle with Miss Cathcart and Miss Tarbell.

Dennis visits a hermit out in the woods, Mr. Wilson thinks that he fought in the civil war, so he tries to get his life story.

Mr. Wilson has written a book on his Uncle Ned's life for his publisher. Uncle Ned however does not want the book to be published So Mr. Wilson goes up to Uncle Ned's house to try and reason with him. The only thing is that Uncle ned has gone down to Mr. Wilson's house to talk with him as well. Now it is up to Dennis to try and keep Uncle Ned from meeting the publisher until Mr. Wilson can return home again.

Dennis' School has a contest that any student who collects the most stamps wins a trip to Cape Canaveral and meet an Astronaut. Unfortunately, Dennis comes down with the chicken pox right when he is about to win.

Mr. Wilson tells Dennis he isn't feeling well to get Dennis to leave him alone and then Dennis tells the whole neighborhood, So they all think that Mr. Wilson is very sick.

Dennis and his friends do an indian rain dance to try to get Henry out of playing golf with his boss.

Mr. Wilson thinks he has discovered big-foot prints in his yard which end with hilarity results.

Dennis becomes confused about love when he hears his parents and Mr.& Mrs. Wilson argue with one another.

Dennis is appointed by the Mayor to go to Washington and ask the Senater to pass a bill for a national Forest.

Dennis and his friends help a boy who is poor and feels that he doesn't fit in prepare for and play in the school basketball game.

Mr. Wilson is convinced that he is allergic to Dennis because he sneezes every time Dennis is around. It is later discovered that it was only the hair tonic that Dennis had been using what was causing Mr. Wilson's allergies.

Dennis sees baby booties knitted for Mr. Wilson's golf clubs and he thinks that the Wilson's are having a baby, So he goes around and tells the whole neighborhood.

Mr. Wilson enters a contest that requires having children, so he passes Dennis and his friends off as his kids.

Dennis accidentally ties an important note that belongs to Mr. Wilson on a pigeon, so Mr. Wilson, Henry, Tommy and Dennis go to where the pigeons roost at night at a spooky house to try and get the note back and end up in the middle of a collage fraternity initiation meant for new fraternity members. After a bunch of twists and turns they find the pigeon with the note tied on it.

Mr. Wilson becomes a cat catcher for the police department to try and enforce a cat leash law.

Dennis stays at the Wilson's house overnight while his parents are out of town which turns out to be a long night for everyone with different incidents.

Dennis and his friends decide to play Robin Hood and help Mr. Wilson(big John) when he is in trouble, only Dennis and his friends end up making things worse for Mr. Wilson.

Mr. Wilson disapproves of the way Dennis' school operates, So he writes his opinion to the newspaper and spends a day at school to observe.

Mr. Wilson attempts to dye his hair in order to look younger for an actress he is interviewing for her life story. However, the dye made his hair look worse and so he cons Henry into taking his place which end in a bunch of tangled webs.

Mr. Wilson takes in a stray dog he believes is worth a 100 dollar reward.

Dennis and his friends start up a laundry business and clean Mr. Wilson's tuxedo, only Dennis gets Mr. Wilson's tuxedo mixed up with other peoples.

Mr. Wilson is planning to take Mrs. Wilson to Hawaii. But when Mr. Wilson has the plane tickets mailed to the Mitchell's, Alice thinks Henry is taking her to Hawaii.

Dennis has what he thinks is a lucky rabbit's foot, Mr. Wilson tricks Dennis into letting him borrow it because he thinks it will bring him good luck.

Mr. Wilson has a mockingbird in his yard which is keeping him awake every night, So he takes the birds nest out of the tree.

When Dennis takes his comic books over to show Mr. Wilson, Mr. Wilson writes an important phone number on one of the comics, So when Dennis leaves and takes his comic books Mr. Wilson spends all day looking for the comic book he wrote the phone number on.

Dennis wants to be a grown man for a day while his dad is out of town, So all day he does what he thinks his dad normally does.

When Mr. Wilson's Aunt Emma pays a visit she takes an instant liking to Dennis, causing Mr. Wilson to fear she will make Dennis her heir.