<p>Fortunately, husband-and-wife psychopaths are few and far between. But after a spate of cyclist killings, Vance and Shepherd are called in to investigate an apparently irreprehensible architect and his wife.</p><p>When the architect is elected to a high political position, Vance's suspicions arise. After an ingenious drone device is used to detonate hidden unexploded World War 2 bombs in the area, the duo is certain that the couple have something to do with the crime.</p><p>Damian Devenish, the architect, is determined to punish society. Can Vance and Shepherd prevent him from achieving his ultimate, spectacular vendetta?</p>