Jack Taylor: Season 1, Episode 3

1 - 3: The Magdalen Martyrs

Taylor is hired to look into past abuses at the infamous Magdalen laundries, the city's home for "wayward girls". The daughter of a former inmate wants him to track down a woman called "Lucifer", a particularly brutal nun who worked there. In the wake of two execution-style murders, Taylor realizes he's not alone in searching for Lucifer.