What Walks These Halls by Amy Clarkin

A prickling sensation grew on the back of her neck, spreading up her scalp. It was the feeling of being watched. She whirled to face the doorway but it was empty. Raven O'Sullivan doesn't remember what happened in Hyacinth House five years ago. When her father died during a paranormal investigation there, everyone said it was an accident, but she's pretty certain it's her fault. Her brother, Archer, wasn't there that night. When asked to investigate the supposed ghost of Hyacinth House, he can't resist saying yes. Even if his sister wants nothing to do with it. Eabha McLoughlin has grown up seeing and hearing things no one else does. Now that she's starting college, she finally has the freedom to find out why. The daring Archer and his eclectic team seem like a good place to start. But everyone has their secrets, and they all lead back to Hyacinth House ...
Binding: Paperback / softback