The body in the piazza : a Faith Fairchild mystery / Katherine Hall Page.

Enhanced descriptions from Syndetics:

The twenty-first Faith Fairchild mystery takes Faith and her husband, the Reverend Tom Fairchild, to Italy, where murder and mayhem mix with pecorino, panna cotta, and prosecco.

To celebrate their twentieth wedding anniversary, amateur sleuth Faith Fairchild and her husband, the Reverend Tom Fairchild, leave placid New England behind for a week of romance and fine food in Italy. The bruschetta, the biscotti, the Chianti--Faith can't wait! She's also looking forward to seeing her former assistant Francesca, and take a class at her new cooking school in Florence.

But on their very first night, a travel writer Faith meets in their Roman hotel turns up dead. Then, in their cooking class in Florence, they find themselves surrounded by a number of suspiciously familiar faces they recognize from Rome.

Someone is cooking up some unsavory business, including sabotaging Francesca's school. To save her anniversary vacation and protect her friend, Faith must follow a twisting trail of clues to unmask a killer--while learning to master a mean Spaghetti a la Foriana, too!