Ten Days' Wonder () is a 1971 murder-mystery film directed by Claude Chabrol and starring Michel Piccoli, Anthony Perkins, Marlène Jobert and Orson Welles. It is based on the 1948 novel Ten Days' Wonder by Ellery Queen, with the detective renamed Paul Régis. It is the fourth film that Welles and Perkins appear in together after The Trial in 1962.
Reviewing a revival of the film in 2018, Richard Brody wrote in The New Yorker "⦠itâÂÂs a minor masterwork of freakazoidal cinema.⦠Chabrol orchestrates the grandiose theatrical tension with giddily audacious cinematographyâ¦. He reveals ravenous depravity beneath pious displays of benevolence and warns of the dangerous marriage of money and art."