IXSS: Essex - Act II Part I

Mickey witnesses something disturbing and confusing in the brig, then later has to return to help out a colleague. Lt. Goodfellow (AKA Sean Barry Hindle) reveals his allegiance after being questioned about mysterious items, and then tries to get information from the lost ship's sole survivor. For JP Knapper, a jammed closet door is the least of his worries. 

Something is loose on the ship.