Mixing high fantasy and mystery, the third book in the Maradaine Constabulary series follows Inspectors Satrine Rainey and Minox Welling as they track down a dangerous murderer with the help of the elite of the Tarian order.

The city of Maradaine is vexed by the Gearbox Murders: a series of gruesome deaths orchestrated by a twisted mechanical genius. With no motive and no pattern, Inspectors Satrine Rainey and Minox Welling-the retired spy and untrained mage-are at a loss to find a meaningful lead in the case. At least, until the killer makes his most audacious exhibit yet: over a dozen victims in a clockwork deathtrap on the floor of the Druth Parliament.

The crime scene is a madhouse, and their only ally is Dayne Heldrin, a provisional member of the Tarian Order, elite warriors trained in the art of protection. But Dayne's connection to the Gearbox Murders casts suspicion on his motives, as he might be obsessed with the legendary phantom he believes is responsible.

While Satrine and Minox struggle to stop the Gearbox from claiming even more victims, the grinding gears of injustice might keep them from ever solving these murders and threatens to dismantle their partnership forever.