Looking for feedback on my YA Horror blurb

Hi everyone,

Below is a brief blurb for a YA horror mystery I am currently writing.

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Working Title: Where Autumn Falls

Everyone in the small town of Withermoure knows about the mysterious Gates family, yet no one knows for sure why they all disappeared without a trace last Halloween.

Seventeen-year-old Ash is looking for answers to a different mystery when he sneaks into the abandoned Gate’s home, only to come face-to-face with the ghost of Libby Gates.

Libby - Mr. Gates’ illegitimate daughter - has no memory of the previous October when she was begrudgingly accepted into her father's home. As her memories unfold each day, Libby becomes convinced her death was no accident. But was her demise at the hands of a family member, or is the Gate’s home hiding something more sinister a ghost?

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The story is told in dual pov; Libby's chapters are in the past exploring her brief time living in the Gates house, and Ash is in the present a year later.