We think everyone should read the CHERUB series by Robert Muchamore. They are really good books about children who work for M15. Here's a taster of the 2nd book in the series, Class A:
Class A is about a 13 year old boy called James Adams who is in the CHERUB organisation who is called away to a mission to try and arrest a drug dealer and his workers who specialise in Cocaine trading. James' job is to become friends with the drug dealers son, Junior and try and get as much information as possible to send to M15.
By WALL-E & Green Tree Python