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Moriarty's Game: The Professor's Invitation by HiddenCity

HiddenCity London

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Professor James Moriarty invites you to celebrate the finest minds in London by solving his mysterious challenge, which he has personally prepared. Succeed, and he promises to make you an offer you can’t refuse…

Journey across the city on a real world adventure game, set in the world of Sherlock Holmes. Solve a trail of clues sent to your phone as you sleuth your way to uncover Moriarty’s safehouse. Make choices, inspect poisons, solve puzzles and unravel riddles on your quest. Pause for food and drink at built-in break points as you undertake your challenge in teams of 2-5 players.

“Perfect… A slam dunk” - Radio Times

About This Deal

This is a typical itinerary for this product

Stop At: Marylebone, Marylebone, London, England

A 3-4 hour immersive experience across Marylebone, London. Journey across the city, solving a trail of clues sent to your phone, in a treasure hunt-style experience. Play a role in the story as you uncover secret locations, unravel riddles and solve puzzles. Pause for food and drinks at built-in break points. Embark on your experience in teams of 2-5 players. Split large groups into multiple teams to play head to head.

Duration: 3 hours

Additional Information

  • Confirmation will be received at time of booking
  • Not wheelchair accessible
  • Service animals allowed
  • Near public transportation
  • Most travelers can participate
  • This is a private tour/activity. Only your group will participate
  • Gear/equipment sanitized between use
  • A 3-4 hour immersive experience across Marylebone, London
  • A fully flexible ticket – you can change your date or time yourself, any time
  • Interactive text messages and phone calls with characters in the story
  • A prize for every player in successful teams, as well as your place on the leaderboard
  • Hands-on physical puzzles for your team to solve
  • A story that changes with the decisions you make
  • Interactions with people you meet, in the real world
  • Optional breaks in pubs and cafes, where you can pick up refreshments

Departure Point
The Marylebone, 93 Marylebone High St, London W1U 4RE, UK

Departure Time
2/18/2022 - 6/1/2023
Monday:10:30 AM - 06:30 PM
Tuesday:10:30 AM - 06:30 PM
Wednesday:10:30 AM - 06:30 PM
Thursday:10:30 AM - 06:30 PM
Friday:10:30 AM - 06:30 PM
Saturday:10:30 AM - 06:30 PM
Sunday:10:30 AM - 04:30 PM

3 to 4 hours

Return Details
Mayfair, London, UK

Voucher Info
You can present either a paper or an electronic voucher for this activity.

The tour identified in this promotion is made available through Viator. Groupon is not affiliated with or sponsored by the HiddenCity London in connection with this deal. Please contact Groupon customer service for all inquiries related to this offer. Inquiries placed to Viator will be directed back to Groupon.

This offer is not eligible for promo codes.

Fine Print

14-day cancellation rights do not apply; no refunds or exchanges permitted. Voucher valid only for date and time listed; may not be exchanged or redeemed for other dates. Purchaser name and phone number must be provided at checkout; this information will be shared with Viator and the tour operator for purposes of order fulfillment. Groupon promo codes may not be used for this offer. Groupon voucher Terms of Sale do not apply. See the tour operator's terms and conditions for this offer here.