I absolutely loved this! One of my favourite middle grade novels, for sure.
We follow Eliot, who has just moved to a new town after her Babung, her grandmother, passed away. Eliot has been struggling with grief and wants to contact her Babung's ghost. But it's upon other ghosts that she stumbled upon in the creepy house she's now gardening at. With the help of Hazel, the girl staying at the strange house, she has to help the ghosts get their memories back if they want to pass to the other side serenely.

This story is about a girl trying to process grief and accept to move on in a new town.
It's about the ghosts she helps and their stories.
It's about family and friendship and crushes on girls.

It was beautiful.
The vibes were perfect for me: sweet well developed characters, a strange house with a magical key, magical objects and wonderful lost souls.