Maybe drug users are sent to the camp. That could have been Graham's offence, and possibly Robin's - all we know of his offence is that he 'messed up', but for some reason I always interpreted that as something drug related. Robin is a time-serving prisoner with the promise of release, not there to be exterminated, so it would seem likely that he is there to be rehabilitated. That would fit if he were a drug user. (And if drug users were sent to the camp, Tinker would have a permanent captive market!)
Archive 3-10-2002