In the direct sequel to Project Nightingale, socially non-gendered British International Intelligence operative Nightingale Spence's latest undercover mission goes dangerously off book. Disavowed and millions of miles from home, Spence resorts to increasingly desperate measures to evade the unwanted attentions of their captor - GETEC Supervisor Greg Hull. Neither of them can predict the kind of horror that is about to unfold. Whilst the survivors recuperate, the Martian Marine Corps and British International Intelligence join forces to avenge the atrocity. However, not everyone is playing by the rules...