The Running of Beasts, by Bill Pronzini & Barry Malzberg

This was originally published in 1976, so it's a little dated, but the subject of serial killers has (unfortunately) remained current. The story takes place in a small upstate New York town in which three women have been killed. The state police and the town police are at odds, and the town is ramping up toward hysteria. We are allowed inside the minds of several main characters with the understanding that any one of them could be the killer. The state investigator is fighting off an ulcer and trying to solve the murders through deduction and logic. The chief constable is using his gut and his knowledge of the vicinity to try to figure out who the killer is. One local man is attempting to use these murders as his big writing break; he is writing a book detailing the investigation. One man is watching his 'career' as a pony gambler crash around him, and trying desperately not to start drinking again. None of these men are happy, they all have reasons to have suppressed rage against women.

Do we find out who the bad guy is? No. Well, not really. OK, no. The ending makes it a good discussion book, though.