The phone rings at four in the morning. For Ian McBriar, now a Detective Inspector with the Toronto Police Department, early morning phone calls are never a good thing. And this is no exception. Starting with a grizzly death and a warehouse fire, Ian follows the trail of a cold-case unsolved murder and a baffling series of clues, hunting for an elusive serial killer. And, this time, it's not only his life on the line. The deeper he digs, the more perplexing the case becomes, the more bodies pile up—and the more dangerous it is for everyone Ian cares about.