"The Guests"
A Hauptsturmführer of the SD arrives at the Colditz town jail with three British commandos. He intends to keep this fact a secret, but it leaks both to Colonel Preston and the Kommandant. Preston, aware of Hitler's order that all commandos are to be shot, pressures the Kommandant to take the commandos under his jurisdiction. He tries, but the SD overrules him. In an unusual bout of helpfulness, Mohn suggests to the Kommandant that he could use his high connections to have the commandos transferred to the castle. This is done, but Mohn has ulterior motives. He predicts correctly that the British contingent would attempt to help the commandos escape, and use their best escape plan, the one used by Pat Grant and Phil Carrington to make their home run. Ulmann, anxious to rectify his embarrassment, goes along with Mohn's plan to trap the prisoners while the Kommandant is away.