Plum Island

NYPD homicide detective John Corey convalesces in the Long Island township of Southold after being wounded in the line of duty. Southold is home to farmers, fishermen -- and at least one killer. Tom and Judy Gordon, a young, attractive couple Corey knows, have been found on their patio, each with a bullet in the head. The local police chief, Sylvester Maxwell, wants Corey's big-city expertise, but Maxwell gets much more than he bargained for.