The Mystery of the Invisible Thief
Enid Blyton
Paperback
(Egmont Childrens Books, June 13, 1996)
Larry, Daisy, Fatty, Pip, Bets and Buster are immediately on the trail when two robberies take place in the village, and though the thief has left enormous footprints, it seems as if he is able to enter houses without being seen. From the MYSTERY series.