A great episode but the ending was a bit flat. I would like to have had a bit more information as to why the man wanted to keep the shirt. (Mice inside the pocket?) Also, he seemed so calm afterwards. He claimed to not understand why he was taken to the dark room in the beginning. If I were held prisoner, experiment or otherwise, I would be grateful for my freedom but I might be a bit pissed and would demanded a bit more than a shower. Also, if they have done this before, what is/was stopping the "experiments" from going to authorities and stopping the experiment from happening again? Is this a kidnapping that cannot be traced?  Not a believable ending and it's a shame. Just a few more bits of information would have made this the most outstanding episode yet.   