How is murder investigated and what role does forensic science play in solving cases? In this gripping book Jim Fraser gives a unique insight into forensic science and examines in detail some of the UK's most high-profile murder investigations in recent decades including the deaths of Rachel Nickell Damilola Taylor and Gareth Williams the GCHQ code breaker. Drawing on his personal experience as a forensic scientist and cold case reviewer Fraser reveals how each of these cases unfolded as a human investigative and scientific puzzle and how some were solved and why others remain unsolved or controversial even today.