This is a reference request. I'm looking for a solid introduction to Cognitive Behavioral Therapy - i.e. what it is and the science behind it. I'm having trouble finding anything that isn't written by someone with pretty clear evangelical purposes. I don't want that. I'm not personally looking to use CBT. I don't want to feel like I'm being sold a bill of goods.
Honestly, the whole thing smells more than a little fishy, like just another self-help regime that people are getting caught up in, where profit-hunting sharks are taking advantage of people's misery. I'm not saying it is that, but that's just to lay out my own priors and biases. So I want a balanced, trustworthy account of the science behind it to evaluate its merits, i.e. whether nor not it's grounded in a successful (i.e. experimentally sound) scientific theory of psychology.