The goofy light-hearted sitcom Ghosts has a terrifying setup for how the ghosts can move about. They can move through matter laterally, but still use stairs and inclines to change elevation. Go down to the basement and through the wall? Then you’ll be trapped in darkness and unable to find your way back except by accident. One character falls down a well and is trapped for most of a season. Another is missing for decades.
The goofy light-hearted sitcom Ghosts has a terrifying setup for how the ghosts can move about. They can move through matter laterally, but still use stairs and inclines to change elevation. Go down to the basement and through the wall? Then you’ll be trapped in darkness and unable to find your way back except by accident. One character falls down a well and is trapped for most of a season. Another is missing for decades.
They can also sit on sofas etc. “It makes no sense!” says one newly dead character.