Cornelia Froboess as Conny

Peter Kraus as Peter

Gustav Knuth as Trautmann, Hoteldirektor

Walter Gross as Mägerli, Hoteldetektiv

Kurt Großkurth as Sulzbach

Karl Lieffen as Grossi, Osteria-Wirt

Ralf Wolter as Lehmann, Sulzbachs Assistent

Trude Herr as Miss Nordsee