Cassidy stars Dick Rosson, brother of the film's director Arthur Rosson, in the title role. The story is set in the West, where Cassidy, a two-bit thief, is fighting a losing battle with tuberculosis. Hoping to see New York one more time before he dies, Cassidy robs a house in order to raise train fare. Unfortunately, he chooses the house owned by the local district attorney (Frank Currier). Taking pity on Cassidy, the DA finances his trip eastward. Cassidy squares his account with the DA by rescuing the man's daughter (Pauline Curley) from a white slavery ring-and losing his own life in process. ~ Hal Erickson, Rovi