University ice-sailing trainees face a hostel fire when caretaker Krenzel rescues Captain Klaus’s swapped suitcase, barring him from travel due to a stolen Hogarth print inside. X-rays reveal a hidden engraving; detectives Hübner and Lindt expose forger Sander and Krenzel. After Krenzel’s sabotage fails and both are arrested, Klaus is exonerated and rejoins his team for the international regatta.
as Oberleutnant Jürgen Hübner
as Leutnant Helga Lindt
as Klaus Grabowski
as Kurt Löwe
