A cop goes undercover to investigate the murder of a woman on New York's Fire Island. Alison, a young, single Manhattan retail buyer, first met Linda seven years ago, when both answered the same classified ad for a Fire Island share. Since then, they've been returning to Seaside Harbor every summer weekend. But one night, after leaving Crane's, a famed singles bar, Linda is found murdered, and Alison starts to realize how little she really knows about her housemate. Is the killer a spurned suitor? What about the mysterious lover back in the city Linda had spoken of-but whom Alison has never met? Meanwhile, Long Island police officer Joe DiGregorio has been assigned to work undercover on the case, posing as a yuppie accountant. Together, Joe and Alison-who is unaware of Joe's real identity-are about to unravel Linda's many secrets...
