Henry Winterfeld (1901-1990) was born in Germany. He began writing for children in 1933, when he wrote Trouble at Timpetill to entertain his son, who was sick with scarlet fever. He went on to write a number of children's books, which have been published around the world.
"An original and humorous mystery story . . . tied neatly into a plot that has continuous suspense. . . . The boys are real in their mischief and eager deducing, and the historical details are so naturally a part of the story that the whole has a liveliness that the pictures suggest."--The Horn Book