16-year-old forensic investigator Luke Harding is hot on the trail of a serial killer. Using weapons that leave no traces behind, the murderer is killing women who have only one thing in common: they share the same name, Emily Wonder. When another Emily Wonder vanishes, Luke and Malc race back to London to save her from the murderer's plans - and from a tsunami that threatens to engulf the city.

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".