Introducing our whodunnit mystery: The Curious Case of the Copper Key
16 Oct 2025, 3:56 p.m.
A time capsule, buried in 1991 under Great Ormond Street Hospital (GOSH), has been opened. In it we found one mysterious copper key with a tag reading ‘Jules’. Six people have already claimed it. But who does it really belong to? And what does it unlock?
With the help of Great Ormond Street Hospital Charity (GOSH Charity) supporters, YouTube megastar TommyInnit – also known as Tommy Detective – is on the case.
The investigation will build to an exciting live finale on 18 October at 5pm BST, streaming on TommyInnit's YouTube and Twitch channels.
Donations to GOSH Charity made via Tiltify before and during the livestream will help unlock clues and reveal more suspects, aiding Tommy in his quest to solve the mystery.
Cracking the case: Every clue counts
The Curious Case of the Copper Key is a unique online mystery designed to capture imaginations and inspire generosity.
Blending storytelling, detective work and digital creativity, we invite people everywhere to join TommyInnit as he unravels the mystery of the copper key, all in support of GOSH Charity.
In the lead-up to the live stream on 18 October, a cast of celebrities will be revealed as suspects in the unfolding mystery, each adding intrigue, humour and suspense as the investigation deepens.
With every donation unlocking new clues and discoveries, supporters can follow each twist and turn in real time as Tommy Detective works to uncover the truth behind the copper key, leading to a dramatic live finale where the mystery will finally be solved.
Creativity for a cause
Behind the fun and intrigue lies a powerful purpose. Every pound raised through The Curious Case of the Copper Key will help fund the new Children’s Cancer Centre at GOSH.
The new centre will bring together cutting-edge research, clinical expertise and family-centred care, giving children with cancer the best possible chance of recovery.
This exciting partnership with TommyInnit highlights how creativity and community can come together to make a difference. By weaving GOSH’s rich history into a modern mystery, the event shines a spotlight on the hospital’s ongoing mission to give seriously ill children the care they need today and the breakthroughs they deserve tomorrow.
Join us
Join the case. Follow the mystery. Help raise money for the new Children’s Cancer Centre at GOSH.
Find out more and follow the investigation on Tiltify and be sure to tune in via TommyInnit's YouTube channel from 5pm BST on Saturday 18 October.
Want to donate to the Curious Case of the Copper Key?
All online donations are being processed through our fundraising partner, Tiltify. If you’d like to make a donation towards the event over the phone, you can call our Supporter Relations team on 020 3841 3841, Monday – Friday, 9am – 5pm.