Iconic Moscow investigator Arkady Renko hasn’t seen his part-time lover, journalist Tatiana Petrovna, since she left on assignment over a month ago. Renko slowly learns that Tatiana has been profiling the rise of political dissident Mikhail Kuznetsov, a golden boy of modern oil wealth and the first to pose a true threat to Putin’s rule in over a decade. Though Kuznetsov seems like the perfect candidate to take on the corruption in Russian politics, his reputation becomes clouded when Boris Benz, his business partner and best friend, turns up dead. In a land of shamans and brutally cold nights, oligarchs wealthy on northern oil, and sea monsters that are said to prowl the deepest lake in the world, Renko needs all his wits about him to get Tatiana out alive.

Dr. Noah Alderman has remarried a wonderful woman, Maggie Ippolitti. Despite her longing for the daughter she hasn’t seen since she was a baby, Maggie is happy too, and she’s even more overjoyed when she unexpectedly gets another chance to be a mother to the child she thought she'd lost forever: her only daughter, Anna. But events take a heartbreaking turn when Anna is murdered, and Noah is accused and tried for the heinous crime. Maggie must face not only the devastation of losing her daughter, but the realization that Anna's murder may have been at the hands of a husband she loves. In the wake of this tragedy, new information drives Maggie to search for the truth, leading her to discover something darker than she ever could have imagined.