Roses are Red
The antagonist in the book doesn't really have any motivation. The "Mastermind", as he calls himself, is just a freak that likes to kill people in different scenarios. When he does kill someone like he wanted to it satisfies him, but no enough because he still has to go and kill more people. Its like an addiction for him and in the end it ends up being fatal to The Mastermind. The ends do not justify the means, because if he doesnt kill the victims how he planned it out he is not happy at all. He is a very creepy character that is really frightening to picture as a real person.