In the game Escape from Colditz, once a POW player has acquired an item, it seems like the guards can pretty much round all of that player's team up from the inner courtyard and dump them in Solitary.
From there, they only get released one at a time, and they still have the items, so relatively few guards can repeatedly keep them locked down.
I can see how you might manage this in a multiplayer game, with one player holding the items, and the others getting them back when they escape. But in a 2 player game, it just seems like you can keep restraining the POWs forever.
Do people have a house rule to cope with this? Or am I misreading the rules?