Lost - Book reflection

I have finished ‘A Rose for the ANZAC Boys’ and I have started reading the book Lost by Michael Robotham. This book is about Detective Inspector Vincent Ruiz who is shot and found clinging to a buoy in the River Thames with no memory of the case he was working on or where he was that nice. The part I am up to is when he is hospital and the doctor is explaining why there is a gauze bandage wrapped around his calf and his finger. He lost he finger before the found him. It was the fourth finger on his right hand. I will keep reading to find out who shot him.