Movies and TvShows featuring "shrinking-room" theme.

Fermat's Room is a thrilling mystery movie about a group of mathematicians who receive an invitation to a secret meeting. They find themselves in a shrinking room with mathematician Fermat's mysterious equations on the wall. As the room continues to shrink, they must solve the puzzles to survive. Tension rises as the group realizes there is a murderer among them. Will they be able to escape before it's too late?