"As Marat's siege engine bores through the Tower, erupting inside ringdoms and leaving chaos in its wake, Senlin can do nothing but observe the mayhem from inside the belly of the beast. Caught in a charade, Senlin desperately tries to sabotage the rampaging Hod King. Marat's objective is increasingly clear: the leader of the zealots is bound for the Sphinx's lair and the unimaginable power it contains. In the city under glass at the Tower's summit, Adam is welcomed into the home of the sparking men. There he meets Ida Allod. A woman who mysteriously seems to know his entire life's story. Adam soon discovers that the whole city knows his name, and as he unravels the reasons why, he'll find that Ida has a grim purpose for him in mind. Aboard the State of Art, Edith and her crew are adjusting to the reality that Voleta has awoken from death changed. She seems to share more in common with the Red Hand now than her former self. While Edith wars for the soul of the young woman, a crisis looms. They will have to face Marat on unequal footing, even as they struggle to reunite with Senlin. And when the Bridge of Babel is finally opened, and the Brick Layer's true ambition revealed, neither they nor the Tower will ever be the same again"-- Provided by publisher.