• 
  Chris Bould

  regizor

• 
  Toby Sculthorpe

  scenarist

• 
  Sean Pertwee

  povestitor
• 
  Chris Kahlert

  pilotul elicopterului
• 
  Gene Ganssle

  Harry Gold
• 
  Dick Baniszewski

  general rus
• 
  Mark Bonnar

  Oleg Penkovsky
• 
  Mark Gluckman

  martorul Vannevar Bush

• 
  Lucy Gaskell

  Genia Peierls
• 
  Dennis Ford

  Lewis Strauss
• 
  Kristin Atwell

  Kristal
• 
  Lucia Giannecchini

  Cindy
• 
  Andrew Havill

  Harry Shergold
• 
  Tim Flavin

  Joe Bulik
• 
  Boris Isarov

  Beria

• 
  David Barass

  Seymon Kremer
• 
  Allin Kempthorne

  Robin Morgan
• 
  Cristina Catalina

  tânărul Kristel Fuchs
• 
  Jonathan Firth

  Rudolf Peierls
• 
  Slade Hall

  Stan Ulam
• 
  Steve Gresser

  Isidor Rabi
• 
  Constantine Gregory

  Varentsov
• 
  Ashvin-Kumar Joshi
• 
  Marco Hofschneider

  Klaus Fuchs
• 
  Gergo Danka

  Igor Kurchatov
• 
  Stephen Earnhart
• 
  Shane Dean

  căpitanul De Silva
• 
  Roy Hunt
• 
  Ross Collins

  George Kistiakowsky
• 
  Mikhail Gorevoy

  Gribanov