chunk: In the final chapter of the book Gilbert and Mifflin learn what the true plot was: The pharmacist was a German spy who had been using the bookshop as a drop-off point. He was a specialist in making bombs, and had hidden a bomb in one of President Woodrow Wilson's favorite books. The pharmacist's co-conspirator was the assistant chef at the Octagon Hotel. He was to be part of the crew on the ship Wilson was to travel on to peace talks in Europe, and was to plant the bomb in Wilson's cabin in an assassination plot. The pharmacist was captured by police, and killed himself.