Six novels followed, with the seventh and final novel, Scorched Earth, being released in February 2013. The first, The Escape, was released on 5 February 2009 in the UK. Muchamore has authored a second series of novels about the origins of CHERUB entitled Henderson's Boys. Most notably, The Recruit has won eight literature awards.

The CHERUB series has been sold in more than twenty countries and has won various awards. Muchamore has written and published seventeen CHERUB novels and a World Book Day novella which combined have sold over 15,000,000 copies. Once they have passed basic training, agents take part in missions, before compulsory retirement at the age of seventeen. CHERUB agents are then eligible for missions upon completion. Basic training is a gruelling, tiresome 100-day course that prepares CHERUBs for the dangers they could face during missions. CHERUB agents start basic training at the age of ten. As children, they are considered innocent by their targets. Once qualified, they are used to investigate targets ranging from international terrorists to gang leaders.

The organisation recruits orphaned children and trains them as spies.

The CHERUB series follows the life of a character named James Adams (formerly James Choke) and his younger half-sister Lauren Adams (formerly Lauren Onions), a member of CHERUB (Charles Henderson's Espionage Research Unit B), a top-secret branch of the British Secret Service. He tried to write novels that he would have enjoyed reading when he was an adolescent, a time when he remembers being too old for children's novels but not old enough to read adult novels. Muchamore started writing the CHERUB novels because his nephew Jared, who lived in Australia, could not find any novels that he liked reading.

The recruit muchamore