looking for a story and cant remember the name

[Sjtiernan]

story about a guy between 18 and 21 who stays at his rich friends house because he beat his or something like that and his friends father indoctrinates him into a secret society of people with "loyal" followers. finds out his teacher is one of the followers and also is his mother. and the story goes from there.

sorry thats all i remember and if this should be posted elsewhere let me know and i will move it.