A cookbook conspiracy

Bookbinder Brooklyn Wainwright loves food, but it's her sister Savannah who became a chef. When Savannah's culinary superstar ex-boyfriend Baxter Cromwell invites her to his new restaurant's opening, she asks Brooklyn to restore a tattered cookbook as a present for him. Brooklyn thinks the book belongs in a museum. And shortly after receiving it, Baxter is found dead with Savannah kneeling over him, bloody knife in hand.