Charlotte Blackburn—a beautiful, intelligent, and gifted tinkerer—lives in a cloistered world of wealth and privilege beneath the Electric Tesla Dome that shields survivors of The Great Calamity. But when her father is abducted, and a strange sickness starts transforming men into vicious monsters, she discovers that technology is no protection at all. Ashton Wells has a dire mission: Secure Colonel Blackburn and deliver his research to The Order of the Sword and Scroll. But the plan goes awry, and he is left with nothing but the colonel’s daughter who has a target on her back and is willing stop at nothing to rescue her father—including handing over to the enemy the only means to stop the monstrous plague. Branded as traitors, Ashton and Charlotte brave the treacherous floating sky ports of Outer City to hunt down the elusive inventor, Nikola Tesla—the only person able to activate the strange device that harbors the secret to their salvation. With the government closing in, a rebellion brewing in the streets, and terrifying Tremblers attacking the innocent, the two must work together to stop their fragile world from crumbling once more into destruction.

Charlotte Blackburn—hero, hunted, the unwitting symbol of a dark rebellion—she thwarted the deadly intent of the treacherous Order of the Sword and Scroll, but at a shattering cost. Now, she fights to survive among a tribe of fierce Wind Reapers who troll the wasteland aboard massive metal walkers. But a new storm is brewing and Charlotte is once again the linchpin in a deadly plan. Sebastian Riley has one goal: Help the citizens of his floating Outer City to survive the Ashen Croup, a terrible affliction that drowns victims in their own lungs. But help comes in the form of the infamous Lady Blackburn, a woman wanted for treason who is determined to run headlong into destruction to prevent a coming war—even if it means reaching out to those who want her dead. Pursued by the shadowy Order and hunted by the furious Reaper clan, Riley and Charlotte brave the monstrous hordes of decaying Tremblers and the terrors of the Wasteland to stop the bloodshed and secure a mysterious calculating engine—a device that can bring about the destruction of an entire nation. With brutal forces gathering against the unsuspecting citizens inside the Tesla domes, a vicious scientist intent on capturing Charlotte for his experiments and the whole of the country in deadly peril, one of them must make a sacrifice too terrible to comprehend.

A legend, traitor, and the Order’s worst nightmare, Charlotte Blackburn was forever changed when she escaped the torturous experiments of the villainous Viceroy Arecibo. Now she battles to retain her humanity as she fights to survive among the wild sky settlers of Outer City. But an old threat emerges and Charlotte must choose between revenge and redemption. Ashton Wells has one purpose: Stop Europe’s Coalition forces from slaughtering the citizens of The Peaceful Union to prevent the spread of the Trembling Sickness. But his plan to overthrow The Order from within is thwarted at every turn by his ex-love, Charlotte Blackburn. A woman he betrayed. His treachery resulted in her capture and now she will stop at nothing to destroy the Order – even if it means all-out war with Ashton. With ruthless enemies mounting against the struggling citizens of Outer City, Charlotte must brave the terrors of the churning sea and face her darkest truth to retrieve a strange submersible machine—a device that may very well be humanity’s last hope of survival.