Dane and Lucy meet Amy Loughren, a longtime nurse now recognised for instrumental role in helping put behind bars one of America’s worst serial killers. Amy became an essential police informant after learning the frightening truth that her colleague and friend Charlie Cullen was killing hospital patients on their watch. Her bravery has since been depicted on the big screen by Oscar-winner Jessica Chastain in The Good Nurse.

In this special episode, she tells The Debrief how she wore a wire to help coax a confession from Cullen himself and the conflict she felt learning her friend was in fact a killer.