The disappearance of a new puppy named Ginger and the appearance of a mysterious man in a mustard yellow hat bring excitement into the lives of the Pye children.
The Pye family of Cranbury, Connecticut adopts a dog, which they name Ginger. But they notice that ever since Ginger came to live with them, a mysterious stranger wearing a mustard-yellow hat has been hanging around their house. When Ginger disappears one day, the Pyes wonder if the mysterious stranger in the hat is involved. Winner of the 1952 Newbery Medal.