When patron of the arts Lady Erlorne Werewilk hires Markhat to identify the parties who are stealthily mapping out the Lady’s estate by moonlight, Markhat anticipates the usual—greedy relatives or rapacious neighbors plotting a land grab. After all, muses Rannit’s most feckless Finder, the Lady runs a colony filled with young artists. Aside from snits over color and perspective, how dangerous could a squabble over a backwoods house possibly be?

With new partner Gertriss in tow, Markhat takes the Lady’s case. Before the first night is done, the house is visited by murder, mayhem, and the haunting wail of what may be a genuine banshee, come to herald not just one death, but the deaths of all within. Trapped in a house under siege, Markhat must make a desperate gamble with an old enemy to win the race to unlock the secret that lies beneath the Lady’s lands. And find a way to turn that secret against the powerful forces converging on House Werewilk.