Young, Kate (Mystery writer). Jane Doe book club mystery

"Lyla Moody and her book club, the Jane Does, are hosting a Halloween party at Magnolia Manor, tailored after Agatha Christie's A Murder is Announced, but when the lights come on after the staged murder, a real victim lies dead. The victim was an estranged relative of Elaine Morgan, operator of the B&B, who'd earlier been seen arguing with her about the fate of the property. The Jane Does believe Elaine is innocent, and when they get the chance to team up with police officer Rosa Landry, they jump on it. Lyla thinks she knows who the killer is, but the only way to find out is by laying a trap using Rosa as bait"--