Sigma: Solve a murder mystery in an immersive theater piece at the Kergorlay-Langsdorff Hotel

Here, the investigation unfolds room by room... Designed by 5e Acte, the immersive theatre piece Sigma makes its return and invites investigators of the night to move freely through the lounges of the Hôtel Kergorlay-Langsdorff, in Paris's 16th arrondissement, to solve a murder, starting October 2, 2026. Written by Frédéric Texier and directed by Nicolas Vial, the experience lasts about 1 hour and 20 minutes and can accommodate up to 60 participants.

The story whisks audiences back to Paris in 1958. "Someone has just died, but you don't know it yet," the company announces. Attendees are expected at the Sigma Club, a circle reserved for people with high intellectual potential. The gathering is meant, in particular, to mark the return of Pierre Kessler, one of the circle’s founders, recently cleared in the murder case of Linda Floyd, an employee at the British embassy. But one member is conspicuously absent.

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The show offers no single, linear path. Each spectator can follow a character, listen in on a conversation, or move between rooms based on the clues they uncover. Interactions with the protagonists are possible when they’re available, without interrupting the scenes in progress. However, audiences may not rummage through the set, move objects, or open doors that are kept closed. Phones must also remain off for the duration of the performance.

Accessible to audiences 12 and up, Sigma is mainly scheduled on Fridays at 7:00 p.m. and 9:00 p.m., with several extra showings on weekdays during school holidays. The format will especially appeal to fans of investigations and participatory theatre who are willing to travel and accept not following every thread of the plot. It remains to be seen which path each person will choose once the doors of the Sigma Club swing open. Shall we reserve?

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