"The Secret Seven" is a popular children's book series created by Enid Blyton. It follows a group of seven young friends who form a secret club dedicated to solving mysteries and going on adventures. The members include Peter, Janet, Jack, Colin, George, Pam, and Barbara, each bringing their unique skills to the team. The club meets in a shed and often uses their secret password to keep their activities hidden from adults. Together, they tackle various challenges, from finding lost items to uncovering suspicious activities, all while enjoying the thrill of teamwork and friendship.