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Successful movie director John L. Sullivan (Joel McCrea), convinced he won't be able to film his ambitious masterpiece until he has suffered, dons a hobo disguise and sets off on a journey, aiming to "know trouble" first-hand. When all he finds is a train ride back to Hollywood and a beautiful blonde companion (Veronica Lake), he redoubles his efforts, managing to land himself in more trouble than he bargained for when he loses his memory and ends up a prisoner on a chain gang. Wikipedia