Could the return of an old enemy could see the gems fragile peace destroyed? The gillungs - genetically modified, waterbreathing humans - are thriving. They've pioneered new aquatic industries, and their high-efficiency quantum battery technology coupled to tidal turbines in the Thames estuary looks set to revolutionise the energy industry. But as demand grows, so does fear of what their newfound power might mean. Then a biohazard scare at Sinkat, their London headquarters, fuels the opposition and threatens to derail the gillungs' progress. Was it an accident born of overconfidence, or was it sabotage? DS Sharon Varsi has her suspicions, and Gabriel sees parallels in the propaganda war he's trying to manage: politicians and big business have stakes in this game too. And now there is a new threat: Zavcka Klist is out of prison. With powerful new followers and nothing to lose, she's out to reclaim everything they took from her. 'Some books are good, some books are even great. This one is important' - SF Signal