The Family Upstairs is a psychological murder mystery in which Libby Jones, newly turned 25-years-old has just inherited a mansion in the affluent Chelsea London area. She soon learns about a disturbing past tied to her new mansion, one involving the mysterious death of her biological parents and the ominous family who moved in with them.

This is a suspense-building, plot-driven thriller that perfectly created an air of unease and mystery. It kept me on edge and I enjoyed the multiple POV structure with which the story was told.

I didn't care very much for the characters except for Phineas and his villainous father because I felt like their characterisation held my intrigue more. The rest of the cast was interesting in a tedious way, especially Libby who was a combination of annoying and bland. There were a lot of threads in this story that built up eager anticipation for the BIG reveal, the jaw-dropping plot twist, but which actually ended up being a very small, anti-climatic reveal.

This is a minor grouse but the ending felt far too genial for me. I'm happy things turned out the way they did but the general mood throughout the story was altogether ominous and dark so the ending seemed a bit incongruous but that could just be my love of tragedy talking.

Overall though, I would recommend The Family Upstairs. It is a classic thriller that will constantly keep you guessing.