Michael Allcock as Narrator

Alan Blenkinsopp as Bill Donovan

Tim Funnel as Paul Dehn

Graham Gauthier as William Fairbairn

Artjom Gilz as Igor Gouzenko

Shawn J. Hamilton as William Stephenson

Ben Hayward as Frank Gleason

Dave Lapsley as Norm Delahunty

Kym Wyatt McKenzie as Robert Cordell

Marina Moreira as Catalina

Drew Moss as Nazi Guard

David O'Keefe as Himself - Host

Michael Rubinstein as Helias Doundoulakis

Austin Schaefer as John Singlaub

Andy Sechi as Greek Source

Ivan Shaver as Eric Curwain

David Straus as Kim Philby

Sarah Strong as Sonya D'Artois

Elizabeth Stuart-Morris as Winifred Gardner