When there's a murder mystery to solve, The Authorities send in their top forensic team. Luke Harding runs fast, thinks even quicker and has the best detective instincts around. His right-hand robot is Malc, equipped with lasers, scanners and technology for finding clues at the toughest of crime scenes. Together, Luke and Malc have the talent to crack any crime - and a good joke, too. Welcome to the thrilling parallel world of Traces. Aged just 16, Luke Harding is the youngest person ever to qualify as a Forensic Investigator. Luke has barely had time to celebrate when Malc, his robotic sidekick, calls him to their first case. A student has been mysteriously shot dead with an arrow. An elusive killer is at large and all the evidence points to Luke himself...