Revealing mistake: During a fight scene in which a bad guy flips James Cagney's character over his shoulder and slams him against a wall, you can see that it isn't Cagney being flipped. The stunt double's face is briefly visible.
Great Guy (1936)
1 revealing mistake - chronological order
Directed by: John G. Blystone
Starring: James Cagney, Mae Clarke, Edward Brophy, James Burke
Continuity mistake: After the bad guys frame Cagney for drunk driving and stage an auto accident, the smudges on his face change shape and position several times between shots. (00:27:30)
Johnny 'Red' Cave: I'll see you in jail, bread-snatcher.