Ivy chances to trust again only to be betrayed, and the investigation into the missing girl raises more questions about Ivy's time in captivity.

Cast: Jodie Comer, Charles Babalola, Ariyon Bakare, Aneurin Barnard, Chipo Chung, Nicholas Farrell, Mark Flitton, Stuart Graham, Joanna Hole, Kemi-Bo Jacobs, Valene Kane, Joe Layton, Natasha Little, Suzette Llewellyn, Colin Mace