Roll Call

Luke Harding's third thrilling case involves a series of mysterious murders in which the victims seem to have only one thing in common -- the same name, Emily Wonder. In the bitter cold of winter, the teenage forensic investigator and his robotic assistant, Malc, investigate the three crime scenes and struggle to identify the murder weapons used, as no traces have been left behind. When a young homeless girl named Emily Wonder is reported missing, Luke and Malc rush back to the slums of London to try to save her from the murderer-and from a giant tidal wave that threatens to destroy the city.

Malcolm Rose is the author of more than twenty-five novels for young adults. A former professor of chemistry, he is a well-known crime and thriller writer. Rose has won many awards over the years, including the Angus Book Award for Tunnel Vision and the Lancashire Book of the Year Award for Plague. His first book in the Traces series, Framed!, was selected as a 2006 Best International Book by the International Reading Association.