Billie B Brown’s next big adventure comes to the Old Melbourne Gaol
These school holidays, Old Melbourne Gaol becomes the setting for a world-first immersive Billie B Brown experience, bringing one of Australia’s most loved children’s book characters to life inside Melbourne’s infamous historic goal.
Join Billie B and the Secret Mystery Club as they take on one of their trickiest cases yet — the hunt for a long-lost treasure hidden somewhere inside the Gaol.
Years ago, a guard lost a mysterious treasure during his rounds…and it was never seen again. Billie B and her friends are convinced the truth is still out there, just waiting to be uncovered.
Using your activity map, you’ll follow a trail of clues through the historic cell block, meeting members of the Secret Mystery Club who will help guide you along the way.
What to Expect
Based on the much-loved Billie B Brown book series by author and Australian Children’s Laureate Sally Rippin, with illustrations by Aki Fukuoka, this self-paced mystery trail blends storytelling, history, and hands-on exploration.
Young adventurers will:
- Follow a trail of clues
- Search for old keys and decode hidden messages
- Look for clues in historical photographs
- Analyse fragments of handwritten notes from the past
- Sneak into an exhibition to uncover clues
- Finish the trail inside the Secret Mystery Club treehouse
Every step brings you closer to solving a mystery that has puzzled Gaol visitors for years.
Perfect for curious kids, book lovers, and families looking for a fun and imaginative day out.
Billie B Brown and the Case of the Missing Treasure is developed by the National Trust of Australia (Victoria) in partnership with Hardie Grant Children’s Publishing.
