Charade (1963)

In "Charade," a woman played by Audrey Hepburn discovers that her husband has been murdered and she becomes entangled in a mystery involving stolen money and several mysterious characters who may be after her. She seeks the help of a charming stranger played by Cary Grant to uncover the truth and stay alive. The film is a suspenseful blend of romance and intrigue set against the backdrop of Paris, with twists and turns that keep audiences guessing until the very end.