Sherlock Holmes Adventure: Solve Professor Moriarty's Mysterious Challenge Across London

Embark on a thrilling Sherlock Holmes adventure in London. Solve Professor Moriarty’s mysterious challenge, uncover his safehouse, and unlock an irresistible offer. Get ready to sleuth, solve puzzles, and unravel riddles in this real-world game. Team up with 2-5 players and enjoy built-in break points for food and drink. Don’t miss out on this slam dunk experience!

Duration: 4 hours
Cancellation: 24 hours
Highlights
  • Marylebone - Engage in a 3-4 hour immersive adventure throughout Marylebone, London. Navigate the city by deciphering a series of clues sent to your phone, in a captivating treasure hunt-style experience. Become part of the narrative as you discover hidden spots, solve riddles, and tackle puzzles. Enjoy food and drinks during scheduled breaks….
What's Included
  • Immersive 3-4 hour adventure in Marylebone, London
  • Engage with the story through texts and calls
  • Hands-on puzzles for teams
  • Real-world interactions with characters
  • Story evolves with your decisions
  • Prizes for successful teams
  • Enjoy optional pub and cafe breaks
  • Flexible ticketing allows date and time changes
Additional Information

Professor James Moriarty extends an invitation to celebrate London’s brightest minds by tackling his intriguing challenge, which he has crafted himself. If successful, he promises an irresistible offer.
Embark on a real-world adventure game across the city, inspired by the world of Sherlock Holmes. Follow a series of clues sent to your phone as you…

Location
The Marylebone
Marylebone High Street
Follow instructions sent via mobile...
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Customer Ratings
4.8
(455 Ratings)
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Sarahbo2183fh
Jan 6, 2026
Great fun trying to thwart Moriarty! - We loved doing the Moriarty game yesterday . Clues are really varied (looking, thinking, working out, calling up, and asking bartenders). They are not impossible although you need your wits about you. You cover one area in some depth so it was great exploring Marylebone. Will definitely do another one when it’s warmer although London is much less crowded in January. I was impressed with the game, it exceeded my expectations.
Review provided by Tripadvisor
Domainsn
Jan 4, 2026
BEST DAY IN LONDON - WE LOVED THIS ACTIVITY! me and the kids did this and had so much much fun, so well arranged, the interactive messages were such fun. highly recommended
Review provided by Tripadvisor
Brandom2026
Jan 3, 2026
Great afternoon - I had a great time, takes us around places I’d never been before and had a great story line. 👍. Would definitely recommend👍
Review provided by Tripadvisor
Kim
Dec 29, 2025
Great activity to explore London in a different and fun way - Hidden City is a great way to explore London while playing a game online. You get to go to places you might never find and you have places to stop for a drink and food if you want to. The clues are interesting and make you think abstractly. We had a great time and met other teams playing on the way.
Review provided by Tripadvisor
Global17737816858
Dec 22, 2025
Great experience - It was a great day a d experience. Comes highly recommended. We have e seen places we didn't know were there. It was fun and challenging solving all the tasks. Comes highly recommended
Review provided by Tripadvisor
Spholiday
Dec 21, 2025
Brilliant fun outdoor treasure hunt with fun pub stops - We’re a family of five with three young adult children. We all loved this experience. Took us about four hours including time to sit and enjoy festive drinks in the three pubs en route. It was the last Saturday before Christmas and yet the pub choice was excellent. Not too busy so we could stop and enjoy whilst being sufficiently popular and festive. The route took us through parts of London we had not visited before and showcased the beautiful side of the city. Throughly recommend. We’ll be sending it round friends suggesting they try.
Review provided by Tripadvisor
H9670rmrosec
Dec 17, 2025
Great experience - well worth the money - A great fun day out. The clues really made you think. Take a pen and paper to help. We discovered places in London we have never been to before. Can’t wait to do the next one.
Review provided by Tripadvisor
Curiosity424862
Dec 14, 2025
Moriarty’s game - What a great way to experience London! The trail takes you to some amazing locations. It is so much fun - it makes you and your brain active all the way. I’d definitely do it again.
Review provided by Tripadvisor
Sofiaf1977
Jan 13, 2026
A different way to explore London - My partner and I had so much fun and really enjoyed exploring a pert of London we did not know! I think it would be fun next time to compete with friends creating teams!
Review provided by Tripadvisor
Cleverard
Dec 29, 2025
Disppointing, not the venture into unknown parts of London at all. - Hidden City was a freezing 🥶 epic fail. The reviews 100% do not match the experience which felt like a promotional experience for the 2 pubs and 1 Paul’s which held some of the clues. Disappointed and embarrassed (organised for my husband’s birthday) as I had highs hopes for us going to places in London we would not normally go.
Review provided by Tripadvisor
From $39
up to 15 guests
2 - Adult
Cancellation: Free cancellation up to 24 hours before the start of your experience (local time).