Cold case investigators scrape back paint in a renovated flat where a murder was committed twelve years earlier, and find a blood stain that leads them to a killer. Scientists extract DNA from crime-scene samples collected in 1973, and a 21st-century hunt for a triple murderer begins. A forensic dentist probes the mysterious death of an eight-year-old ancient Egyptian mummy. A document examiner reassesses the authorship of Johann Sebastian Bach's cello suites. In this collection of fascinating cold cases from Australia, the UK and the US, award-winning writer Liz Porter shows how modern forensic science can unlock solutions for crimes and mysteries unsolved for decades, and, in some cases, centuries.