This is book # 4 in (A Tea Shop Mystery) by Gerry Schmitt under the pseudonym Laura Childs. From the back cover: "It is truly exhilarating experience for Theo-helping Charleston's Sea Turtle Protection League shepherd hundreds of tiny green loggerheads safely into the sea. But just as she's about to celebrate all her hard work with some hearty Lung Ching tea and spicy gumbo, she spots a ..."

Uh, oh, I think things are about to get interesting!