The novels feature the adventures of a group of young children – Tewfik (Takhtakh), Nossa, Loza, Moheb, Atef and their dog Zinger.
The five and their dog live In Maadi as they solve different crimes ranging from robberies to stopping criminal groups and terrorists.
The popularity of the books led to a number of adaptations including an animated series and a live action film.
The first book "The Burning Shack Case" was published in 1968 by "Dar El Maref" (Knowledge House) under their Police story line up and was a big seller.
In a 2007 interview, Salem spoke about how the 5 adventurers were actually an attempt to restore his memories as a lonely introverted boy who moved with his family into Northern governorates due to his father's work as naval officer.