What a beautiful and thrilling read! This book got me from start to finish. The story is about Matthew Barron who woke up from a coma and can't remember a single thing about his past. He is haunted by nightmares. After not making much progress in psychotherapy he is contacting ex Met cop, turned private detective, Tina Boyd. He needs her to find out who he really is and where those nightmares are coming from. 
Tina is a great character and I love to see her back! If you read other books by Kernick you will know her all too well. As I said before the book just had me and especially the last 70 pages were so thrilling I couldn't put my book down! A big recommendation from me to you. I loved every page of it.