• 
  David Semel

  regizor

• 
  David Seltzer

  scenarist

• 
  Bill Pullman

  dr. Richard Massey
• 
  Natascha McElhone

  Sora Josepha Montafiore
• 
  Mark Rendall

  Hawk
• 
  Stephanie Leonidas

  Athena
• 
  Davenia McFadden

  Sister Delise (2 episodes, 2005)
• 
  Chris Ellis

  Mr. Beaudrey (1 episode, 2005)

• 
  Michael Massee

  Isaiah Haden (6 episodes, 2005)
• 
  Alexa Nikolas

  Lucy  (6 episodes, 2005)
• 
  Brittney Coyle

  Olivia 'Livvie' Beaudrey (6 episodes, 2005)
• 
  Winter Ave Zoli

  Anna-Theresa (4 episodes, 2005)
• 
  Fred Durst

  Ogden (5 episodes, 2005)
• 
  Martin Roach

  Roy (1 episode, 2005)
• 
  Ryan James

  Convent Gate Guard (1 episode, 2005)

• 
  Fionnula Flanagan

  Mother Francine (4 episodes, 2005)
• 
  John Rhys-Davies

  Professor Lampley (6 episodes, 2005)
• 
  Daniel Cerny

  Male Student (1 episode, 2005)
• 
  Bill Lake

  Prison Doctor (1 episode, 2005)
• 
  Petr Meissel

  Hospital Director (1 episode, 2005)
• 
  Albert Hall

  Father Ambrose (1 episode, 2005)
• 
  Christopher Biggins

  Cardinal Laveigh (3 episodes, 2005)
• 
  Brian Caspe

  Connor (1 episode, 2005)
• 
  Tobin Bell

  Nathan Volk (5 episodes, 2005)
• 
  Ted Garcia

  News Anchor (unknown episodes)
• 
  Martin Starr

  Mark Rubio (5 episodes, 2005)
• 
  James Babson

  Haden Pilgrim (1 episode, 2005)
• 
  Jesper Christensen

  Torvald Eklind (4 episodes, 2005)
• 
  Werner Daehn

  Asteroth (3 episodes, 2005)
• 
  Alex Karzis

  Vendor (1 episode, 2005)
• 
  John Churchill

  Ticket Agent (1 episode, 2005)
• 
  Caryn Green

  Tulia (5 episodes, 2005)
• 
  Vanna Bonta

  Vatican Researcher (unknown episodes)
• 
  Moira Price

  Flight Attendant (1 episode, 2005)
• 
  Patrick Bauchau

  Dr. Daniel Goran (2 episodes, 2005)
• 
  Joel Polis

  Hospital Administrator (2 episodes, 2005)
• 
  Roy Werner

  CNN Anchor (unknown episodes)
• 
  Veronika Bellova

  Museum Assistant (unknown episodes)
• 
  Valentina Carnelutti

  Donatella Sagritte (1 episode, 2005)
• 
  Alexander Skarsgård

  Gunnar Eklind (unknown episodes)
• 
  Paul Norwood

  Hospital Attorney (1 episode, 2005)
• 
  Clémence Poésy

  E.C. (3 episodes, 2005)
• 
  Orla Brady

  Nora Webber (6 episodes, 2005)
• 
  Robert Polo

  Court TV Reporter  (2 episodes, 2005)
• 
  Rob Elk

  Screener (1 episode, 2005)
• 
  James Bigwood

   Prison Chaplain (2 episodes, 2005)
• 
  Chelsey Coyle

   Olivia 'Livvie' Beaudrey (6 episodes, 2005)
• 
  Paul Venables

  Tom Webber
• 
  Jonathan Whittaker

  Nelson Boyd
• 
  Scott Williams

   Prison Guard / ... (3 episodes, 2005)
• 
  Jeff Smith

   Gate Guard / ... (2 episodes, 2005)
• 
  Anne Katrine Bay Ejlersen

   Super Model #1 (2 episodes, 2005)
• 
  Karen Sofie Bay Ejlersen

   Super Model #2 (2 episodes, 2005)