Wie ein Blitz (1970)

It all begins when the wealthy real estate shark Gordon Stuart (Albert Lieven) is murdered in a lonely villa by his wife Diana (Ingmar Zeisberg) and his closest collaborator Mark Paxton (Peter Eschberg). When Mark wants to get rid of the corpse, it suddenly disappears. A nerve-wracking game of "cat and mouse" turns the perpetrators into victims. Inspector Clay (Horst Bollmann) investigates and soon stumbles across more corpses