An interesting but not always successful mix of Jewish and Iroquois/Seneca tradition, custom, and lore form the backdrop for this mystery set in upstate New York. Tenth-grader Aviva “Vivi” Hartman has come with her rabbi father from Buffalo to a small town so that Rabbi Hartman can conduct the funeral of a Jewish high-school girl found dead on sacred Indian ground. It becomes clear before long, however, that the victim, allegedly killed in an accident while on an archery-club outing, was murdered. Vivi passes the time while in town working on a project for a social-studies class back at her own school: following a student around and taking notes about her life and activities. When that student experiences a near-brush with death, Vivi becomes convinced that the girl is the target of a killer trying to hush her up. Did this girl, the school photographer who accompanied the archery club, capture the murder on film? Vivi puts her knowledge of pilpul—the ancient Jewish system of logic used to decipher passages of the Torah—to work and sets about solving the mystery. Meanwhile, the long-simmering relations between a group of white students and some of the Senecas threaten to burst, with members of each group accusing the other of murder and bringing to the fore some lurid details about the victim's and the accused murderer's lives. Feder interweaves details of Jewish and Seneca traditions and ceremonies and is knowledgeable about and respectful of both groups, and the solutions to the murder and another mystery are unexpected, though not entirely plausible. Confirmed mystery readers will probably take to this one, but it's nothing special; characterizations are superficial and the writing is, for the most part, awkward. (Fiction. 12-14)