Olivia Colman

as Susan Edwards

4 episodes

David Thewlis

as Christopher Edwards

4 episodes

Dipo Ola

as Douglas Hylton

4 episodes

Kate O'Flynn

as DC Emma Lancing

4 episodes

Samuel Anderson

as DC Paul Wilkie

4 episodes

Maanuv Thiara

as DC MacBride

4 episodes

Daniel Rigby

as DCI Tony Collier

4 episodes

Felicity Montagu

as Patricia Wycherley

4 episodes

David Hayman

as William Wycherley

4 episodes

Kathryn Hunter

as Tabitha Edwards

3 episodes

Connie Kiss Mee

as Young Susan

3 episodes

Nimisha Odedra

as Sandra Winters

3 episodes

Lolly Jones

as Custody Officer Gibson

2 episodes

Tina Harris

as Custody Officer Hughes

2 episodes

Hayley Carmichael

as Ange

2 episodes