Who is the arsonist -- Detective Sally and the Magic Magnifying Glass

Author: Gert Koppitz and J?rg Sommer,
Publisher:
Publish Date: 2004-05-01
Features: The twins Pitt and Chris ran away from home. They met Sally and the "Magnifying Glass" Doctor. Later, their house was set on fire, and the twin brothers disappeared. Some suspected that the twins were responsible. Sally and the "Magnifying Glass" Doctor privately investigated and finally found the twins imprisoned in a small cabin. Who confined them?