Amidst the gleaming spires of electric skyscrapers and soaring airships that define the turn-of-the-century skyline of bustling Grisham City, a series of brazen technology heists threatens to plunge the shining metropolis into darkness. When the innovative inventions of the city's most brilliant minds begin disappearing without explanation, private detectives and fraternal sleuths Luke and John Buchanan are thrust into a high-stakes race to crack the confounding case.

Following a slender trail of cryptic clues, the dogged duo must navigate the labyrinthine underbelly of Grisham to uncover who or what is behind the spate of robberies, before the city's most remarkable technologies fall into the wrong hands. Aided by the research prowess of their clever cousin Mary and the investigative savvy of the city's most intrepid police lieutenant, Bailey, the Buchanan brothers plunge headfirst into a web of danger as the shadowy perpetrators grow increasingly bold.

Every innovative mind in Grisham seems under threat as the daring thefts escalate, and every tantalizing lead pulls Luke and John deeper into the city's darkest underworld. To disrupt a cunning criminal plot, save the visionary inventors from ruin, and prevent a revolutionary new technology from being wielded for nefarious ends, the brothers must survive attacks from the city's most vicious gangs and outmaneuver the stone-faced titans of industry who seek to control Grisham's technological future.

The answers behind the robberies may be far more significant than anyone imagined, and lives, as well as the shining city itself, hang in the balance. In a race against time, Luke and John must use every ounce of their cunning and courage to unmask the shadowy forces threatening to extinguish Grisham's technological brilliance, before the city is plunged into a new dark age.