Murder Most Haunted — Emma Mason

An unforgettable heroine is faced with an unbelievable crime in this snarky, charming locked-room mystery that asks: would you rather be snowed-in with a ghost, or a murderer? 

A grand country estate.

On her last day as a detective, Midge McGowan is given the retirement present from hell: a ticket to a haunted house tour. She'll have to spend a weekend ghost-hunting in an isolated mansion with a group of misfits, including a know-it-all paranormal investigator and a has-been pop star.

A puzzle that can't be solved.

The guests soon realize that the house has a mind of its own… and that they might not be the only ones there. An eerie figure appears on the property, and then the unthinkable happens: someone is murdered in a room that's been locked from the inside.

A ghostly weekend they might not survive.

When a blizzard cuts the group off from help, the house's own dark secrets begin to surface, and Midge can't shake the creeping sense that they are walking into a nightmare. Could a ghost really be responsible? Or is the culprit one the guests, who have somehow, impossibly, endeared themselves to Midge?