The Trial of Mary Dugan is a 1941 American drama thriller film directed by Norman Z. McLeod and starring Laraine Day, Robert Young, Tom Conway, Frieda Inescort, John Litel and Marsha Hunt.

It had previously been made as a 1929 MGM movie starring Norma Shearer in her first all-talking role.

[2][3] Released from a reformatory after two years there for stealing $500, Mary Dugan is advised by a friend there, Agatha Hall, to change her name.

But when Jimmy gets a job in South America, she can't marry him and go along because a birth certificate, required for a passport, would reveal Mary's true identity.

Jimmy proves that West and the widow schemed to kill her husband, who was leaving her, and make Mary the scapegoat.