Into Thin Air is book 3 in the Mysteries of Cobble Hill Farm fiction series. Veterinarian Harriet Bailey's life becomes more hectic than usual when she reopens her grandfather's art gallery. Between coping with an invasion of gray squirrels in the gallery's loft, the many tourists lining up to get a glimpse of Grandad's famous paintings, and the mysterious illness affecting a local farmer's cattle, Harriet isn't sure how much more she can handle. But...