The Silent Watcher (1924)

Joe Roberts is devoted to his wife, Mary, and fiercely loyal to United States Senate candidate John Steele, by whom he is employed as secretary. Mary does not share her husband's enthusiasm for Steele and believes Joe false to her when actress Lily Elliott dies in an apartment rented in Joe's name. Even under charge of murder and a police "third degree" Joe does not reveal that Lily's affair was with Steele, an unhappily married man; he remains silent in the mistaken belief that Barnes, Steele's campaign manager, has told Mary the truth. When Joe is finally released, Mary is gone, but Steele learns of the situation after he is elected and then reunites the couple.