As his covert investigation of Point Blanc gets underway, Alex discovers that he's been left vulnerable. The Department seem to be closing in on the double-agent in their ranks—but Yassen gets there first.

Appalled to realise that the students in Point Blanc are being mysteriously changed by Doctor Greif, Alex enlists Kyra and James in a plan to escape. Blunt spearheads an investigation into Parker Roscoe.