Death at Inishmore Castle: A completely unputdownable Irish cozy crime murder mystery (A Mercy McCarthy Mystery)

Historic Inishmore Castle opens its doors for the first time to host a weekend of whiskey tasting and soda bread baking. Sisters Mercy and Lizzie McCarthy arrive hoping for a relaxing break, but their plans change when Mercy discovers fellow guest Father Brennen dead at a library desk. She soon learns he was not actually a priest and had been searching through old journals, possibly connected to a legend of lost treasure at the castle. When another guest is found drowned in the lake, Mercy becomes convinced foul play is at work. With a storm closing in and the castle full of frightened guests and worried staff, she sets out to identify the killer, aided by her reluctant fellow sleuth and her dog Mr. Poe. Among her suspects are an unconvincing nun, a busybody birdwatcher, and the castle owners themselves. When Mercy discovers secret passages in the castle walls, she believes she may be close to solving the case—but danger lurks as she pursues the truth.