An ambitious young journalist uncovers the horrific slaughter of 22,000 Polish officers during World War II, a secret kept hidden for far too many years.

Alex Pettyfer
as Stephen Underwood

Robert Więckiewicz
as Michael Loboda

Talulah Riley
as Jeanette Mitchell

Michael Gambon
as Frank Hamilton

Henry Lloyd-Hughes
as Mason Mitchell

Piotr Stramowski
as Andrzej Nowak

Gwilym Lee
as Captain John Underwood

Chris Walker
as Gerrard

Colin Buchanan
as Ellison

Michael Byrne
as Coroner