sentences:  CHERUB agents Gabrielle O'Brien and Michael Hendry are sent to infiltrate the Slasher Boys.While carrying out a delivery for Major Dee, the leader of the Slasher Boys, Gabrielle's contact is killed by members of rival gang the Runts and Gabrielle is grievously wounded after being stabbed by a Runt.Gabrielle barely survives her injury and the CHERUB Ethics Committee think of calling off the mission but are persuaded to send James and Bruce to infiltrate the Mad Dogs.