The Sister S1, E3

Almost a decade into his new devoted married life Nathan is rocked to the core when Bob, an unwelcome face from the past, turns up on his doorstep with shocking news, triggering a series of catastrophic decisions.

Cast:Russell Tovey , Amrita Acharia , Bertie Carvel , Paul Bazely , Nina Toussaint-White , Amanda Root , Colin Blyth , Ewan Bailey , Simone Ashley , Tim Plester , Fleur Keith , Ruth Clarson , Alex Boxall , Lucy Lewendon , Adam Morris , Sam Henderson , James Doherty , Angela Terence