Suspect

Anne-Marie Duff

Dr Susannah Newman

Ben Miller

Detective Superintendent Richard Groves

Dominic Cooper

Jon Fallow

Tamsin Greig

Natasha Groves

Vinette Robinson

Lousia McAdams

Eddie Marsan

Alistair Underwood

Celine Buckens

Sapphire

Nicholas Pinnock

Joseph Buckley

Gina McKee

Kate

Matt Baker

Creator

Jo McGrath

Executive Producer

Walter Iuzzolino

Executive Producer

Dries Vos

Executive Producer