A chain of increasingly gruesome crimes begins when an unscrupulous man named Mainardi (George Hilton) coerces a serial killer (Michel Antoine) into offing Mainardi's wife. After a young couple (Alessio Orano and Cristina Galbó) steals the murderer's car -- along with the fresh corpse in its trunk -- the killer sets off on a maniacal crime spree, staying one step ahead of the bumbling police in director Luigi Cozzi's &NFi;giallo&NFi_;-genre thriller.