When the Alden children discover that the town council, led by Ms. Lerner, is ready to tear down Greenfield's historic firehouse in favor of a modern building, they try to save it. But mysterious things start happening--objects disappear, false alarms sound at the firehouse, and a strange man appears in town. Luckily, the children find a blue notebook that is just the clue they need to solve the mystery.

The Firehouse Mystery 2015, Oasis Audio

ISBN-13: 9781613754849

Audiobook CD

The Firehouse Mystery 1997, Albert Whitman & Company

ISBN-13: 9780807524480

Trade paperback

The Firehouse Mystery 1997, Scholastic Inc

ISBN-13: 9780590649193

Unknown binding

The Firehouse Mystery 1997, Turtleback Books

ISBN-13: 9780613005272

Turtleback School & Library edition