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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Pete
Apr 5, 2026
HiddenCity are the best at this! - This was our 4th HiddenCity event and honestly we love them. They’re so well put together and really pull you into the story, it doesn’t feel like just a game, more like you’re part of it. Every time we do one we end up discovering places in London we’d never have found otherwise. We’ve tried a similar experience with another company before, but HiddenCity are on a different level, we wouldn’t bother
Review provided by Tripadvisor
Mollie2278
Mar 4, 2026
Great Activity for a Day Out! - Fabulous experience with a puzzle exploration game around Marylebone. Clues were just the right level of difficulty and we saw lots of interesting hidden landmarks on our trail. Ellise was fabulous with handling our queries via email too! ⭐️⭐️⭐️⭐️⭐️
Review provided by Tripadvisor
Back4breakfast
Feb 28, 2026
Fantastic way to explore London’s hidden parts either the family - These games are great ways to see parts of London you’d not necessarily consider visiting. My kids are now old enough to play them so we let them do the game while we chaperoned. My wife and I did this game 10 years ago and it was definitely updated and modified as we couldn’t remember most of what we saw this time round. Highly recommend you try them all!
Review provided by Tripadvisor
W2275hostacyr
Feb 23, 2026
Best interactive game! - Moriarty's game was just brilliant! A great experience that kept us as a family talking about for ages. Saw parts of the city we would never have seen and met some really lovely people along the way too. Good value as the game lasted a good few hours and we will definitely be back to do another game soon.
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U4276mlhelenl
Feb 22, 2026
Great afternoon with friends - A great afternoon out, seeing lovely parts of London that we never would have seen. Really good fun!
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Cakeblonde
Feb 22, 2026
Fun afternoon activity. - A really great way to see pays off London. Challenging clues Good fun Excellent value for money
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S969osallans
Feb 21, 2026
Excellent - Excellent. We had a great time. I loved exploring parts of London we've never been to, and loved the built-in breaks. I'll definitely be going again.
Review provided by Tripadvisor
I7049efsimong
Feb 21, 2026
If you’re looking for a walking quest with great puzzles that takes you through a lovely bit of London, this is it! - This has been the third game that we’ve played from Hidden City and it was just as great as the rest. The puzzles were challenging and varied and the integration of clues inside shops, etc adds so much to the story and gameplay. The route taken through London was a lovely walk and took us through some streets and areas that I’d never seen, having lived here all my life. It took us just over 2 hours to complete, but there are breaks built in if you want to sit and have a drink/snack. In terms of group sizes, it was just my wife and me, but I played another of theirs with a large group and it was just as good. If everyone has their phone number registered when setting up the game then everyone gets the clues sent to them via WhatsApp, so you’re not all huddled around one person and their phone. I would say the games we’ve played from Hidden City have been the best walking quests we’ve done in London!
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172kayleyp
Feb 17, 2026
Couldn’t recommend enough! - The whole experience was amazing, extremely interactive. The instructions were easy but the puzzles were the perfect level of challenging. By far the best escape room/secret London tour we’ve ever done!
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Harpies
Feb 17, 2026
Great fun day out - Enjoyed a lovely day. Found it a bit tricky first but soon we got into.the swing. Some of clues so clever. We could stop and start as we wanted. My husband and i had such a laugh and really enjoyed.
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).