Body Double has all the characteristic Gerritsen imagination and innovation (despite a title that has seen service a little too often); here, Detective Jane Rizzoli has the feeling that she is gazing at her doppelganger when she looks at the body of Boston pathologist Dr Maura Isles stretched out on the slab that was her own work surface. Maura Isles has Jane's physical appearance, birth date, and even blood type. And when tests reveal that the women are twin sisters, Jane is plunged into a dangerous mystery, travelling to Maine where she must investigate the identity of a mother she never knew. And, all the while, a savage murderer is indulging in nationwide slaughter.

Gerritsen has created some controversy with her readiness to gaze into the darker recesses of human psychopathology, and this book (like its predecessors) is not for the squeamish. But those seeking powerful and trenchant crime writing need not hesitate. Jane Rizzoli, too, is a strongly characterised protagonist. --Barry Forshaw