Worried that Frank might discover that the three bosses used investors' money to play the stock market, Carlton commits suicide.

Frank's brother Reverend Curtis appears, and together they flee the police and hide at the headquarters of the Sparks gang, a boxing gym.

When the police arrive, Curtis poses as a boxer and knocks out defeats the champion, Roundhouse.

Richards and Burns discover a dictation machine recording in which Carlton confesses his guilt and suicide.

In a contemporary review for the New York Daily News, critic Wanda Hale called A Man Betrayed "a humorous, if not too convincing, piece of entertainment" and wrote: "[W]e've become so little calloused to plots wherein an innocent man or woman suffers through trial, conviction up to the inevitable last-minute reprieve.