character - Marco

character - Stefano Carli

character - Georges Villiers, duc de Buckingham

character - Conduttore della biga

character - Stefano

character - George Whitmore

character - Marco Adinolfi

character - Cap. Droet

character - Jeff Regan

character - Bruce Landy

character - Naval Officer (uncredited)

character - Smiley Gordon

character - Tracy

character - Ted Cummings (as Stephen Barclay)

character - Eddie Wheeler

character - Captain James Glover

character - Tom's Classmate (uncredited)

character - Kenny Revere

character - Flier (uncredited)