Lessard is on the path of a serial killer and a mysterious sect. When a young Montreal family dies in an orgy of bloody violence, all signs point to a rampage by the father. But Victor Lessard isn’t convinced. The brilliant, brooding detective suspects that others were involved in the killings. But who? And why? As Lessard struggles to solve the puzzle, the discovery of a nightmarish chamber of horrors seems to confirm that the murders are part of a wider pattern. With a ghost from his past making him doubt his own sanity, Lessard must evade the lethal operatives of a powerful, highly secretive organization as he races to untangle the mystery before a diabolical killer can strike again.