<Tr> <Th> Publisher </Th> <Td> Hodder Children's Books </Td> </Tr> <Tr> <Th> Media type </Th> <Td> Print (paperback) </Td> </Tr> <P> Henderson's Boys is a series of young adult spy novels written by English author Robert Muchamore . The series follows Charles Henderson, the creator of the fictitious CHERUB organisation . The novels are set between 1940 and 1945, during the Nazi occupation of France in World War II . Throughout the novels, Henderson leads a series of war missions, aided by children . </P> <P> Henderson's Boys is a spin - off of the CHERUB series, which centres on the peacetime version of the organisation during the 2000s and 2010s . Henderson's Boys reveals various features of the CHERUB organisation's origins . </P>

What was the subject of the henderson books