Two sides of Glasgow collide when a teenage girl makes a pact with a wealthy couple. But can Dan and Emily trust this girl with their last chance to have a child?

Cast: Sophie Rundle, Shirley Henderson, Martin Compston, Katie Leung, Kate Dickie, David Hayman, Mirren Mack, Fiona Bell, James Harkness, Liz Ewing, Paul Brannigan, Bailey Patrick, Christopher McPhillips, Samuel Paul Small, Helen Katamba