Robert Sullivan makes a strong case that Lizzie Borden might have gotten off, even if she committed the crime. Oddly enough for a judge, he confuses this with proving that she did commit it. Sullivan starts off with the assumption that she was guilty, briskly rejects any other possibilities, and lo and behold, he finds her to be guilty.
I would recommend this book to anyone with a strong interest in the case. It has all sorts of information that is not included elsewhere about a similar crime that could have thrown off suspicion, the backgrounds of the jurors, etc.
Sullivan simply rejects the idea that anyone else could have done it. The suggestion that it might have be Bridget Sullivan is quickly dismissed without examinaton: "Bridget didn't do it."
I feel informed, but not at all convinced. I recommend Kent's
Forty Whacks: New Evidence in the Life and Legend of Lizzie Borden as the best book that I have ever read on the subject, and Edgar Radin's
Lizzie Borden: The untold story (A Dell book) as the second.