Five Go to Billycock Hill (Famous Five #16)

Hurrah! It's holiday time, and the Famous Five are spending it at Billycock Hill. Most exciting of all, they've made a new friend - a real pilot! But now he has disappeared, with top secret equipment . . . The Five are puzzled, and concerned, too. Could their new friend by a spy - a traitor! Whatever his motives are, the gang feel duty-bound to investigate . . .

Please note this copy has some creases on the covers and scuffs on the edges of the covers and an inscription on the inside page.