Sword of Justice (TV series 1978-1979)

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. - IMDb