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 codebreaker. 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.