The Messenger

Robert Sheehan

Jack

Lily Cole

Emma

Joely Richardson

Psychiatrist

David O'Hara

DCI Keane

Tamzin Merchant

Emma

Andrew Tiernan

Father

Alex Wyndham

Martin

Deirdre O'Kane

Mum

Jack Fox

Mark

Rhys Connah

Young Jack

Oliver Heald

Ben

Leo Woodruff

Jumping Man (Uncredited)

Ali Cook

Geoff

Gerard Fletcher

Desk Sergeant

Julian Gorman

Hi Viz Dave

Joan Kempson

Pam

Imogen King

Young Emma

Eric McNichol

Landlord

Josh Moran

Jack's Landlord

Alfie Pettit-Page

Billy