Richard is a private detective. He makes a good money from marital infidelity: the deceived husband and wife generously paid him for proof of their infidelity "halves"...

A low rank journalist at Tribuna Sera newspaper receives a letter one day. His correspondence contains a serial killer's letters, which he exploits.

A mystery-thriller about an Italian woman who moves to Davenport to open a restaurant. After her husband commits suicide, she spends fifteen years recovering at a Minnesota mental hospital. When she builds herself up enough to begin another restaurant, she discovers that a murder took place there fifty years earlier. She decides to investigate and finds a secret plot.

Two brothers, Monty and Ted, will inherit $300,000 if they manage to live together for six months.

An action drama about an assassin who is ordered to kill an old friend and the repercussions when he refuses. At the same time, although it has nothing to do with the plot, there seems to be a relentless undercurrent of sadism and masochism with a homosexual aura.

A series of unexplainable accidents befall the people and companies responsible for developing the world's first supersonic airliner. A British agent is sent to investigate and with the help of another agent uncovers a plot masterminded by Carl Petersen who stands to gain eight million pounds if the aircraft is not ready by a certain date.