Traces Books in Order

Newly qualified forensic investigator Luke Harding faces his first case when a student is killed with an arrow. Further murders leave evidence pointing at Luke, forcing him and his robotic assistant Malc to find the killer and clear his name.

Luke Harding and his robotic assistant investigate a doctor's murder in the London slums, but rain has washed away crucial evidence. As further shootings follow, they race to identify the killer before the violence becomes a massacre.

A murderer targets women and girls who share the name Emily Wonder, leaving little usable evidence. When another Emily disappears, Luke Harding and Malc race to save her while a looming natural disaster places London in further danger.

With an execution nineteen days away, Luke Harding reopens a murder case despite official opposition. He and Malc must challenge apparently conclusive forensic evidence while another investigation exposes corruption in the system controlling whom citizens may marry.

Suspicious accidents threaten construction of a sports complex for the International Youth Games. When its manager vanishes, Luke Harding and Malc investigate sabotage, racing to identify the person determined to bring the development to a disastrous end.

A hospital's unusually high death rate brings Luke Harding and Malc into another investigation. Luke discovers his estranged father working there, but DNA evidence linking him to the deaths turns a hoped-for reunion into a deeply personal case.

Still recovering from brain surgery, Luke Harding is assigned a murder investigation that seems unusually straightforward. Identifying the killer raises harder questions about responsibility, official motives and why the authorities sent Luke back to work before he was ready.