The Secret Seven are Peter & his sister Janet, Jack, Colin, George, Pam & Barbara. They meet every holiday in the shed at the bottom of Peter & Janet’s garden – & solve mysteries, & eat lots of delicious food. But no one can enter the shed without whispering the secret password!

When a priceless pearl necklace goes missing, the Secret Seven are the first off the mark to catch the thief. After all, they saw him escape. But will they be able to find the stolen necklace?