I don’t know exactly where to begin describing this sub-sophomoric piece of wasted celluloid. The story is about a boy named Gilly (Chris Klein) and a girl named Jo (Heather Graham) who fall in love and “do it” only to discover later that they are siblings. But, wait! They are not really related after all, for the real long lost brother shows up and claims his rightful place in the family. But too late, Jo has already moved to Washington State to forget her thought-to-be brother/lover. There, she falls in love with the town millionaire playboy who makes his money by growing acres of marijuana. Jo’s mother (Sally Field – how did she get talked into this role?) doesn’t want her daughter and Gilly to reunite, or she will lose the potential inheritance from her rich fiancée…. Oh, who cares?… My advice – if you have nothing to do on a cold, lonely evening, and want to gamble away some time and money, go down to your local wishing well and throw in ten bucks, because “Say It Isn’t So” is a sure loser.