Just got it and I couldn't help myself, I read it in the car. Holee shit, the Atom?! He stepped in (ON!) her brain! That's just...wow. I'll have to post more later, I need to re-read this. If it really was Palmer as the killer on his own accord, it couldn't be because he wanted his patents back, Jean was signing them back anyway. Damn, what a mindblowing issue.
