Podcast:48 Hours Published On: Sun Apr 21 2019 Description: An Irish businessman is killed by his American au-pair-turned-wife and her father. They claim self-defense. The dead man’s sister fights to clear his name. "48 Hours" correspondent Maureen Maher investigates.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.