Revelations - S1.E17

Alistair decides to declare his feelings for Nicky after discovering that she has started a relationship with Cliff and Dana gets more than she bargained for after helping Ken in his recuperation. Nicky discovers Diane Peach's painful secret after her young pregnant daughter is brought into Mercy Peak - that she gave birth at 15 to a Downs Syndrome daughter. She asks Nicky to find out what happened to her. Nicky finds old records and finds that Diane's baby was not born with Downs Syndrome but adopted out by Diane's parents. Nicky and Cliff decide to investigate other cases and believe Gil's mother Matron Crouch was responsible but before they question her she dies in her sleep. She approaches William about his signature on some of the files and finds out that Alastair was also adopted in the same fashion as Diane's baby.