A LURE is less a "Who-Done-It" than a "Whodunnit-With-Whom." There's the beautiful Bryn, who likes sleeping around. There's Pat, her much older lover, who sequesters her on his Caribbean Island. There's Dana, Bryn's sister, who owns a floundering tackle shop in Northern Minnesota, and is the only person Pat allows to come visit. There's Coz, an ex-marine and Pat's right-hand-man, who Dana immediately falls for, but Coz is already gaga over Bryn. Meanwhile, Dottie, Pat's septuagenarian housekeeper, is in love with Pat, who mainly ignores her. And finally, there's Henry, Pat's rapscallion son, a movie star who's lurking in and out of the shadows.