If the protagonists go into a haunted building, there is a non-zero chance that while their back is turned the walls and doors will turn into hole-less walls, leaving the unfortunate protagonists trapped inside. A less supernatural variant is for the doors to slam shut behind them and refuse to open.

And consider this dismaying observation: this chamber has no windows, and no doors. Which offers you this chilling challenge: to find a way out
—Haunted Mansion ride

See also: Locked in a Room and It Was Here, I Swear

Examples of One-Way Entrance include:

Flat out gone

Amusement Park Rides

  • This is part of the story of The Haunted Mansion Disney ride.

Video Games

Western Animation

  • Samurai Jack and the Haunted House.
  • Doug: While at a haunted house ride the floor in one of the rooms, the floor .

Slammed Shut and Locked/Jammed

Western Animation

Unsorted or Ambiguous

Tabletop Games