Sword of Justice (1978)

Dack Rambo plays millionaire playboy Jack Cole, who, after the death of his parents, is framed on charges of embezzlement. In prison, Cole learns various tricks of the criminal trade - lockpicking, safe-cracking, electronic surveillance, etc. Upon his release, Cole uses his wealth and his newly learned talents to help others, leaving his calling card, a "sword of justice", at the scene.