Flambeau was a hardened criminal and he could have stolen the blue cross at any cost, but till any strong help reached, Father Brown kept on misleading him. Actually, Father Brown had left the original blue cross at a sweet – shop anticipating that it could be stolen from him anytime. Since the blue cross was not with Father Brown, even after terrible tricks to kill him, Flambeau couldn’t have managed to steal or snatch the blue cross from Father Brown.