H.I.V.E.

"Otto and Raven are desperate to rescue their friends from the clutches of Anastasia Furan, head of the evil Disciples organization. First they must track down the location of the Glasshouse, the prison where Furan trains children to become ruthless assassins. But meanwhile, Otto is also being hunted by the Artemis Section--an elite division of the American intelligence services that specializes in capturing the toughest targets"--Back cover.