This is the third book in the DCI Tom Douglas series; however, it stands alone easily. The happenings in Tom’s life are pretty minor in the grand scheme of the book and explained well enough that the reader will know what’s going on with him.

This is one of those mysteries that’s hard to review without accidentally giving something away. I can say that I found this book to be very suspenseful. There are a couple of minor mysteries in addition to the central mystery of what happened to Olivia. One in particular was easy to figure out but I didn’t mind because I was still engrossed in the main plotline. Parts of the book were repetitive and it could have been trimmed down a bit. However, the twists, especially the big one at the end, were very clever and outweighed my minor criticisms.

I listened to the audio version of this book. The book takes place in the UK so the narrators have British accents, which I love to listen to. Tom was voiced by a man and the main female character was voiced by a woman, which was the right choice. The hard part about listening to a compelling mystery on audiobook is that I want to stay in garage and keep listening even after I’ve come home! (I listen to the books while I’m driving.) I’d like to read the other books in this series and see if the mysteries contained in them are as good as the one in Sleep Tight.