At one of my early startups I shared a sizable private office with two other engineers, one other full-timer who was the lead and a contractor we were pretty sure had aspergers based on a variety of odd but relatively easy to ignore behaviors.

Everything was fine and his work was acceptable until he apparently became convinced we were talking about him behind his back and conspiring in some way against him. He started leaving an external webcam w/microphone attached to his desktop and monitoring the shared office when he wasn't around, his contract required him to provide his own computer so he didn't seem to see a barrier to attaching a camera and microphone despite his role having no need for such things - this was years before video conferencing for meetings was commonplace.

Because we were a proper scrappy startup we would work crazy hours often, but his being an hourly contractor didn't enable him to pull all-nighters with us salaried folks. So the circumstances somewhat encouraged this paranoia, but his mind went crazy with it.

His contract wasn't renewed because of this crap, it was a really annoying situation. I hated that we essentially fired someone because of dumb social issues despite their technical contributions being good.