This is a non stop page turner. Kate is working for the police as a super recogniser who can identify individual people in a crowd without the use of technology. She is helping the police with various cases that are putting her in the spotlight. After a serious car crash that leaves her with a brain injury she has to start to rebuild a new life. She meets Rob the techy who has the perfect life and helps her recuperation but Rob is convinced that he has a doppelganger, someone who is trying to kill him. Someone he met a long time ago while travelling in Thailand. This is a great book with many twists and turns. It is impossible to know where it will turn next. This is a psychological thriller.