High Island blues

This is the eighth and final mystery featuring George and Molly Palmer-Jones.
Among the birders from around the world gathered for the dazzling spring avian migration on the Texas coast are three old friends from England--Rob, Mick, and Oliver--celebrating the twentieth anniversary of their first unforgettable trip to High Island.
But the party's over when Mick--the introvert who surprisingly got the girl they all wanted years ago--is murdered. The police tag Rob for the crime, but shrewd birder-investigator George Palmer-Jones focuses his attention on some odd ducks among the English contingent. Meanwhile, back home in England, George's wife, Molly, digs up the dirt on a save-the-earth society. And on High Island, a killer finds that one murder is not enough. . .