H.I.V.E. 3: Escape Velocity

Pupils and staff at H.I.V.E. are horrified to discover that Dr Nero has been captured by the forces of H.O.P.E., the Hostile Operative Prosecution Executive, the world's newest and most ruthlessly efficient security force. Three months pass without any news of his fate, and Number One has decided to appoint a sinister new headmistress for the school, somebody that the pupils and staff had thought that they'd seen the last of.