Percy is furious at Lennox—does he understand what he has unleashed? And are the demons from her past powerful enough to stop her from doing what needs to be done?

Tensions are high between Percy and Prendergast, but he won’t waver—they must kill the parasites before leaving Helix Station. If they can find a way to detonate the reactor, they can destroy the entire station. But more surprises are in store...