Anthony Hope's classic tale gets a decidedly 'un-classic' treatment at the hands of Peter Sellers. Following the story somewhat, friends of the new King Rudolph of Ruritania fear for his life, and switch him with a look-a-like London cabby. Throw in two(!) lovely blondes, treachery, and a battle for life and honour, and enjoy life at its zaniest.
| Actor | Role |
|---|---|
 Peter SellersRudolf IV/Rudolf V/Sidney Frewin | Rudolf IV/Rudolf V/Sidney Frewin |
 Stuart WilsonRupert | Rupert |
 Lynne FrederickPrincess Flavia | Princess Flavia |
 Elke SommerCountess Montparnasse | Countess Montparnasse |
 Gregory SierraCount Montparnasse | Count Montparnasse |
 Catherine SchellMauban | Mauban |
 Jeremy KempDuke Michael | Duke Michael |
 John LaurieArchbishop | Archbishop |
 Ian AbercrombieJohann | Johann |
 Simon WilliamsNot listed | Not listed |
 Lionel JeffriesColonel Zapt | Colonel Zapt |
 Michael BalfourNot listed | Not listed |
 Graham StarkNot listed | Not listed |
 Michael SegalNot listed | Not listed |
 Arthur HowardNot listed | Not listed |
 Norman RossingtonNot listed | Not listed |
 Brendan DillonJoseph (uncredited) | Joseph (uncredited) |