Billie B Brown and the Case of the Missing Treasure
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.
Event Details:
Dates: 20 December 2025, until 1 February 2026 (Closed Christmas Day)
Times: 10.00am - 5.00pm
Suitable for: Perfect for children aged 6–12.
All children must be accompanied by an adult.Location: Old Melbourne Gaol
Notes: Self paced