Jackie Kay's first novel is a curious and haunting story about mixed-race jazz trumpeter Joss Moody (Irish mother, black father), who turns out, on his death, to have been a woman all along. The story begins with that discovery. Thereafter it traces its consequences for his white wife Millie, who always knew, and his adopted black son Colman, who didn't. Millie rehearses the stages of her relationship with Joss, reworking an intense and abiding love and commitment in which gender is, oddly, never really an issue. Colman, by contrast, is driven, in the period immediately following his father's death, by anger and an intense feeling of betrayal, to try to "out" his father, and complete his humiliation as a kind of personal expiation. As he retraces the steps of Joss's life, however, he begins gradually to change his mind. Kay has won acclaim for her poetry. Here she shows that she can harness her plangent voice to a narrative, producing writing of real maturity. Race and gender are deftly woven into its fabric, without insistence, to reveal a troubling ordinariness about fragmentation and confusions of identity in contemporary British life.