Avery is left with her grandmother's house after she passes, a wealthy family buys it, and they hire Avery to manage this house and their entire neighborhood of exclusive, rented summer cottages.
Avery is an excellent manager, becomes friends with the Lowman's daughter, Sadie, and is treated like family, and then is faced with Sadie's death that is being ruled as a suicide. Avery knows Sadie wouldn't kill herself and especially on the night of the annual Plus-One end-of-the-summer party.
Avery stuck to her theory that Sadie didn't commit suicide, and she found a few things to prove the police investigation hadn't been thorough and that no one could be trusted.
Her investigation made me nervous, though, because of the way she went about gathering evidence.
We move from chapter to chapter telling the before and after of Avery and Sadie's friendship and of the goings on at the rental community. Was Sadie really Avery’s friend or did she think of Avery as the help and pretend to be her friend? Was anyone really Avery's friend?
I was a bit confused at first about what was going, but once Avery found evidence and clues about what really happened and things were revealed, the interest kicked up.
THE LAST HOUSE GUEST will be for you if you enjoy a beach setting, characters that have secrets, characters that are broken, and a mystery that keeps you guessing.
The ending is definitely a surprise. 4/5
This book was given to me as ARC by the publisher via NetGalley in exchange for an honest review.