All the Dark Places by Terri Parlato. Published by Kensington

Boston Detective Rita Myers has become accustomed to violence, she sees it every day on the job. Still, her newest case stands out – a successful psychologist murdered in his own home the night after his wife and friends through him a lavish birthday party. To Rita, this doesn’t have any of the hallmarks of a random killing, she’s sure that someone close to Jay is responsible for his death. Jay’s wife Molly is in shock and mourning the loss of the only man who knew the truth about her painful past. But as the investigation continues, Molly begins to learn things about Jay, things that are disturbing, to say the least. How well do we really know the people we sleep beside every night?