The Nix, Nathan Hill.

« You have to be careful, Pwnage said, with people who are puzzles and people who are traps. A puzzle can be solved but a trap cannot. Usually what happens is you think someone’s a puzzle until you realize they’re a trap. But by then it’s too late. That’s the trap.« 

A really great novel ! An abandoned son seeks his mother’s past unveiling their twin solitudes.
An intense story both fascinating and sometimes irritating.