The Minerva Mines Company is interested in transporting two particularly valuable diamonds from Cape Town to Amsterdam. To confuse potential thieves, two detectives are sent on two different ships with steel suitcases and they have no clue whether they’re carrying pebbles or diamonds. Nevertheless, a collection of questionable characters come on board both ships. The hunt for the diamonds begins; the suitcases are stolen; everyone is suspect.
Maria Andergast
Hermann Speelmans
Harald Paulsen
Fita Benkhoff
Maria Koppenhöfer
Hans Junkermann
Hermann Mayer-Falkow
Else von Möllendorff
Alfred Maack
Max Gülstorff
Otto Sauter-Sarto
Georg Schmieter
Bayume Mohamed Husen
Alexander Engel
Otto Braml
Erich Dunskus
Ernst Dernburg
Aribert Grimmer
Karl Hannemann
Oskar Höcker
Rudolf Koch-Riehl
Charlie Kracker
Maria Ney
Arthur Reinhardt
Ernst G. Schiffner
Charly Berger
Kurt Bobeth-Bolander
Max Harry Ernst
Claire Glib
Hansjakob Gröblinghoff
Karl Jüstel
Alfred Karen
Viggo Larsen
Alfred Pussert
Ferdinand Robert
F. W. Schröder-Schrom
Michael von Newlinsky