To Catch a Thief is a 1955 American romantic thriller film directed by Alfred Hitchcock, from a screenplay by John Michael Hayes based on the 1952 novel of the same name by David Dodge. The film stars Cary Grant as a retired cat burglar who has to save his reformed reputation by catching an impostor preying on the wealthy tourists of the French Riviera. Grace Kelly stars opposite him as his romantic interest in her final film with Hitchcock.

Plot

Retired jewel thief John “The Cat” Robie is suspected by the police in a string of burglaries on the French Riviera. When they come to his hilltop villa to question him, he slips their grasp and heads to a restaurant owned by his friend Bertani. The restaurant’s staff are members of Robie’s old gang, who have been paroled for their work in the French Resistance during World War II. They are angry at Robie because they are all under suspicion as long as the new Cat is active. When the police arrive at the restaurant looking for Robie, Foussard’s daughter spirits him to safety; Danielle is a young woman who fancies him dearly.

Robie realizes he can prove his innocence by catching the new Cat in the act. He enlists the aid of an insurance man, H. H. Hughson, who reluctantly discloses a list of the most expensive jewelry owners currently on the Riviera. American tourists Jessie Stevens, a wealthy nouveau riche widow, and her daughter Frances, top the list. Robie strikes up a friendship with them. Frances feigns modesty at first, but kisses Robie at the end of the night before retiring to her room.

The day after, Frances invites Robie to a swim at the beach, where Robie runs into Danielle. He keeps up his cover of being a wealthy American tourist, despite Danielle’s jealous barbs about his interest in Frances. Frances accompanies Robie on a “picnic” to a villa where Robie suspects the new Cat might break in. Frances reveals that she knows Robie’s real identity. He initially denies it, but concedes it that evening when she has invited him to her room to watch a fireworks display. They kiss passionately.

The next morning, Jessie discovers her jewels are gone. Frances accuses Robie of using her as a distraction so he could steal her mother’s jewelry. The police are called, but by the time they reach Jessie’s room, Robie has disappeared.