When twelve-year-old Lisa Kane notices funny new feelings happening inside and is asked by an older woman if she's ""had the change,"" the subject is not, as you first think, menstruation but lycanthropy, a condition Lisa learns she has inherited from her mother. This is all about how Lisa adjusts to the discovery-finding a fellow lycanthrope in one of the boys at school and then going off with him and her father to an anthropologists' convention where a whole group of werewolves simultaneously come out of the closet, romping and howling at night on Mount Tamalpais. The next evening there's a werewolf consciousness-raising session, and Lisa becomes a heroine by proclaiming that the condition is ""nothing to be ashamed of,"" though when she returns home even her former best friend, Toni, fails to sympathize with her confession. It's all played straight, right down to the innocent sensuality of Lisa's midnight fling on the mountain. It could be the wildest spoof of any year. . . but since the author never gives a clue as to whether he's laughing with his readers or at them (though we wonder whether his name suggested the subject or vice versa), your reaction depends entirely on how much you read between the lines. As we see it, a shaggy dog in wolf's clothing.