We all have many sides to our personalities, which we display to different friends, colleagues and partners, but what happens if those facets become detached from each other, and take on lives of their own? This is what Bob Oxnam was to discover when he was diagnosed with multiple personality disorder. The first of Bob's personalities to make himself known during therapy was an angry young boy named Tommy, who claimed to live in a castle in Bob's mind. Bob's psychiatrist eventually met all 12 'people' who lived in the castle. He uncovered why Tommy was torturing Bobby in the dungeon, and the many other layers of terror that had lived in Bob since he was a small child. Told in the voices of the different personas, we see the bookish Robert take over as dominant personality from Bob, and watch as the other personalities successfully merge into the three that share power today.