Loud mouthed Barney Maguire is America's champion heavy weight boxer. At Raffles' Club one evening he brags to Raffles and Bunny that he has a trap which would trap the cleverest of Cracksmen. He also insults the noble game of cricket and ridicules his English boxing opponent. This is enough to tempt Raffles into breaking and entering Maguire's premises, but he is unaware of the nature of the trap which awaits him. It is left to Bunny to save the day.