Roses Are Red

Just before a newly-elected district attorney takes office, the town's crooked political boss has his henchies kidnap him with intentions of replacing him with an ex-convict who is his exact double. While the D.A.'s double/replacement is studying his mannerisms where he is being held captive, the D.A. knocks out the double, takes his clothes and manages to fool the gang boss into thinking he is the ex-con. (imdb)