Equally likely is he is having an internal debate about why I am I with these fucked up people, and he and Brooke are being set up as the last two standing. If he was the snitch and had enlisted Brooke in the bird killing off-screen, there is no way they have the time-wasting private conversation they actually had. …

My sense was Shaw's diagnosis would be sociopath and not psychopath. Anyway, great episode.