Simon Templar
Governor Hudson Inverest
Maude Inverest
Tony Unciello
Marco Di Cesari
Inspector Buono
Signora Unciello
Sue Inverest
Benson
Maria (as Carroll Simpson)
Ada Harmer (as Anita Sharp Bolster)
Eddie Harmer
Georgio
Vittorio
Warder
Coliseum Passerby (uncredited)
Club Patron (uncredited)
Coliseum Vendor (uncredited)
Restaurant Patron (uncredited)
Coliseum Tourist (uncredited)
Tourist (uncredited)
Waiter (uncredited)
Guitarist (uncredited)