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.
Take Home a book and carry on the mystery.
Written by the Australian Children’s Laureate Sally Rippin, Billie B Brown is the perfect first chapter-book series. Every down-to-earth story follows bold, brilliant Billie as she uses her imagination to tackle a new challenge, whether it’s about friends, family or feelings! Purchase copies of the Billie B Mystery Series, plus other titles at the Old Melbourne Gaol Shop.
Join Once. Visit Free All Year.
Join as a National Trust Member when you visit these school holidays and enjoy free entry to Old Melbourne Gaol, plus the Billie B Brown Activity Pack at no extra cost. Membership unlocks free or discounted entry to Old Melbourne Gaol and National Trust properties all year round—perfect for school holidays, weekends and last-minute adventures.
A Family or Household Membership is $120 when you join onsite (with the $40 joining fee waived) and covers up to two adults and four children or grandchildren under 18.
More School Holiday Ideas
Looking for more ways to ignite curiosity and creativity? Discover what’s on across the National Trust these School Holidays. From hands-on activities to immersive storytelling experiences, there’s something to spark imaginations and create lasting memories at historic places across Victoria.
Still looking for more School Holiday ideas? See what’s on offer from the National Trust.
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.
