I first thought of The Lovely Bones. The writer seemed like she started off wanting to write a story where the ghost helps people catch the killer, then turned it into a mood piece about people grieving and coping, and then got to the end and realized “Oh yeah, I have to wrap this up, I’ll caught ‘death by icicle’ so at least there’s some karma.”
The Graduate. Book is okay. Movie is a high water mark in cinematic history.