The depths of Stephen's problems are revealed, causing John to set his manipulative sights on Charles and Caroline as a way to make money; Susan isn't shy about exploiting the Trenchard's new social circle.

Cast: Philip Glenister, Tamsin Greig, Alice Eve, Richard Goulding, Paul Ritter, Bronagh Gallagher, Tara Fitzgerald, Ella Purnell, Harriet Walter, Christine Lohr, Tom Wilkinson, Emily Reid, Saskia Reeves, James Fleet, Steven Blake