Claim: Gregory Peck appeared in a film.

The Keys of the Kingdom is a 1944 American film based on the 1941 novel The Keys of the Kingdom by A. J. Cronin . The film was adapted by Nunnally Johnson , directed by John M. Stahl , and produced by Joseph L. Mankiewicz . It stars Gregory Peck , Thomas Mitchell , and Vincent Price , and tells the story of the trials and tribulations of a Catholic priest who goes to China to evangelize .