Are you ready for a delicious Mother's Day mystery?Pie shop owner Bertha Hannah might not have any children of her own, but this Mother's Day she is celebrating by helping to cater a Wine and Cheese party for some of the richest ladies--and mothers--in all of Culver's Hood, Nebraska. She has a delicious cheesecake tart prepared for the occasion, and things start off swimmingly, until a gruesome discovery is made at the elegant venue.When the hostess...