• 
  Aidan Quinn

  Captain Thomas Gregson
• 
  Jordan Gelber

  M.E. Hawes
• 
  Lawrence Gilliard Jr.

  Dwyer Kirk
• 
  Julienne Hanzelka Kim

  Shauna Milius
• 
  Dakin Matthews

  James Connaughton
• 
  Luke Robertson

  Louis Carlisle
• 
  Ato Essandoh

  Alfredo Llamosa
• 
  Ophelia Lovibond

  Kitty Winter

• 
  Robert Capron

  Mason
• 
  Jon Michael Hill

  Detective Marcus Bell
• 
  Andrea Syglowski

  Sarah Jacoby
• 
  Brian Lee Huynh

  Brett Won
• 
  Carra Patterson

  Jessa
• 
  Jonny Lee Miller

  Sherlock Holmes
• 
  Lucy Liu

  Dr. Joan Watson