The Portorican prime minister asks British detective Sherlock Holmes to find a twin for King Fernando XXIII, a weak and frightened man who fears anarchists and does not want to show himself in public. Holmes finds in the Czech newspapers a photo of the perfect double, František Lelíček, a daring bon vivant drowned in debt, so when Holmes offers him money, Lelíček decides to travel to Portorico and play the role.
Vlasta Burian
Martin Frič
Lída Baarová
Theodor Pištěk
Eva Jansenová
Fred Bulín
Arnold Reimann
Jára Beneš
George Andreani
Robert Ford
Alois Dvorský
Josef Zora
Čeněk Šlégl
Eduard Šlégl
Josef Oliak
Betty Kysilková
F. X. Mlejnek
Jan Sviták
Alfred Schlesinger
Josef Loskot
Josef Rajský
Jan W. Speerger
Josef Rovenský
Felix Kühne
Otto Zahrádka
Přemysl Pražský
Vladimír Pospíšil-Born
Eman Fiala
Zvonimir Rogoz
Kamila Rosenkranzová
Jan Richter
Karel Postranecký
Emil Dlesk
Gustav Čech
Karel Schleichert
Mario Karas
Miloslav Svoboda
Václav Menger
Viktor Nejedlý