In an effort to save a boy wrongly accused, a group of six young friends living in ancient Rome search for the culprit who scrawled graffiti on the temple wall. Simultaneous. 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.