Leading a life full of deception, lies and cheating other people is bad enough. This episode we discuss con artists who went even further, killing those they had deceived. The original 'Dirty John' could be considered John Edward Robinson. This con man did it all, being a serial killer, kidnapper, forger and embezzler. we also discuss Cindy McKay, who also led a busy life, once being described as "Killer con artist, fake nun, corpse burner and mother of 6".