Jules Maigret, a meticulous Parisian police detective, is a famous literary character. In this film adaptation of his stories, he's trying to solve a murder of a friend, a P.I. who was looking into an industrialist and his family.

A woman is stalked by a psychopathic killer. She eventually kills him, only for the man to show up again, this time sane and without any knowledge of the attacks. The police don't believe her, but one detective agrees to look into it.

Hit man Cleve approaches writer/cop Dennis about a story for his next book: How Cleve made a living, working for one of the most powerful politicians in the country. To get the story right, they travel around the country to gather statements and evidence, while strong forces use any means they can to keep the story untold.

Just before stubborn millionaire Edwina Cutwater dies, she asks her uptight lawyer, Roger Cobb, to amend her will so that her soul will pass to the young, vibrant Terry Hoskins – but the spiritual transference goes awry. Edwina enters Roger's body instead, forcing him to battle Edwina for control of his own being.

A crew of interplanetary archaeologists is threatened when an alien creature impregnates one of their members, causing her to turn homicidal and murder them one by one.