The Secret Seven: 17 Exciting Adventures (Set of 17 Books) revolves around seven fictional child detectives who solve crimes. The group secret headquarters is in a garden shed and they have a badge and a secret password. Peter is the leader of The Secret Seven and is the most mature of all the members. His sister, Janet, is a brave and sincere girl. The group has two other girls, Barbara and Pam, both of whom are Janet’s schoolmates. Peter’s best friend Jack is also a part of The Secret Seven. The remaining two members are George and Colin, who attend the same school as Peter. Scamper, Peter and Janet’s pet dog, always accompanies them on their adventures.