Talking with Serial Killers

I wasn't wowed by this book. The author felt judgmental which whilst, yh I get it, made him feel bias and I wasn't sure how much of his opinion was colouring the book. In addition, I don't think it delved deep enough into potential psyche of certain people, such as those who seek out killers, or the effects of an abuse relationship etc... Also the constant self promoting got on my nerves