by Frank Spiering. Random House, $17.95. “And,” according to the same old rhyme, “when she saw what she had done/She gave her father forty-one.” She got away with it, too, which is probably why the case continues to attract truecrime buffs. Mr. Spiering, quoting at great length from trial records and contemporary reports, offers what he considers a factual re-creation of the Borden murders. It is hopelessly implausible.