This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Lake Mungo
That cell phone footage... Can you imagine what it would feel like walking alone in the middle of the night, and suddenly seeing your own corpse, detailing your very own gruesome demise, walking towards you.
Poor Alice... not only does she have so many horrible problems she keeps hidden, they're so severe that they actually prevent her from moving on to the afterlife. At the end, her family moves on with their lives, but it's implied that Alice remains stuck- her family just can't feel her anymore.