As usual, Weir has written a lively, readable book, but I think it is a very poor history. Weir makes some insightful remarks when the facts suit her, but I would only recommend the book to readers who know enough about the subject to carefully weigh her claims. Others have talked about the reliability of Weir's sources, but I'll just stick to the problems that are internal to the book, even if the reader knows nothing else about the topic.
Weir constantly contradicts herself and her logic is often bizarre. On a general level, she tries to argue that the facts surrounding the death of the princes were at one and the same time, a closely guarded secret and known to everyone in Europe, depending on which is most convenient to her at any given point. At a more detailed level:
She spends several pages arguing that the story that Edward IV's marriage to Elizabeth Woodville was bigamous is completely ludicrous and that no contemporary writer believed it. She then describes it as "well-conceived and plausible".
Citing More, she claims that Margaret Beaufort was able to prove to Elizabeth Woodville that her sons (the princes in the tower) were dead. Later, Weir claims that Henry VII (Beaufort's son) didn't know whether or not they were dead. What happened to the evidence provided to Woodville?
Weir claims that Louis XI knew that Richard III murdered the princes, in spite of the fact that she believes they were alive when Louis died.
She claims that More got otherwise unknown information from knowledgeable people of his acquaintance. If it is obvious to Weir that these people might have known something, wouldn't it have been even more obvious to Henry VII and his advisors? Wouldn't he have questioned them? Would they have refused to answer the king and then babbled all they knew to More?
She argues that no-one other than Richard III could have killed the princes during his reign, since no-one was tried for it. Then she claims that Henry VII knew who murdered the princes, at Richard's order, but never tried them because it would have raised embarrassing questions. Wouldn't it have been even more embarrassing for Richard to have tried someone during his reign? She also claims that Henry feared it might alienate other European rulers, in spite of her claim that those rulers already knew all about it while Richard was alive and continued to deal with him.
She argues that More's friends read the manuscript and would have corrected any errors, in spite of the fact that (as she admits) it contains numerous errors as it is.
There are more problems, but I can't sum them up in a few sentences.
Since originally writing this review, I have looked into the issue of the textile evidence, i.e., Weir's claim that an unidentified person said that there were scraps of velvet in the coffin when it was opened; Weir does not bother to cite a source. I strongly fault her failure to provide documentation for this new and very interesting argument.
She claims that an unnamed textile expert told her that velvet first came to England in 1400. She then argues that it was very expensive and custom limited its use to only "the very highest", so these bones must have been the princes. This contradicts her cherished quote from More that the princes were naked when they were strangled; I think it's unlikely that people committing murder in haste would dress the bodies before burial. Further, according to
Textiles and Clothing, c.1150-1450 (Medieval Finds from Excavations in London) (Medieval Finds from Excavations in London) by Elisabeth Crowfoot, Frances Pritchard, Kay Staniland, the first WRITTEN records of velvet imports were in the late 13th century. The wardrobe records of Edward IV, the princes' father, show that pieces of velvet were common gifts to his followers, and the wardrobe records of Sir John Fastolf (d.1459) show that he had several velvet garments. [Fastolf was an extremely wealthy man, so his wardrobe can't be taken as typical for all knights.] Fabric of all types was relatively much more expensive prior to the industrial era and there was a very active trade in used garments and fabrics. So there had been something close to two hundred years prior to the deaths of the princes, and three hundred and fifty years prior to finding of the bones, for resold pieces of velvet to work their way down the social chain.
I am therefore not convinced that small scraps of velvet prove that the bodies belonged to princes, even assuming that the unknown witness in the uncited source was correct in his/her identification of fabric as velvet and not some other nappy fabric. I am, however, convinced that Weir was suspiciously sloppy in presenting her case, particularly given that many of her other statements are carefully documented.
If you're a student of the topic, as I am, it's worth reading. I wouldn't recommend it to anyone as an introduction. For that, try reading A.J. Pollard's
Richard III and the Princes in the Tower. Pollard also believes that Richard III was guilty; my objections to Weir are not primarily based on the assumption that Richard was innocent, just a preference for good, well-documentated research and logical thinking.
Mysterious Deaths - The Little Princes in the Tower (Mysterious Deaths) by William W. Lace is also better than Weir, just realize that a lot of the illustrations are 19th century. I also recommend
Royal Blood: Richard III and the Mystery of the Princes by Bertram Fields. Fields is more sympathetic to Richard III, and quite dismissive of Weir, but the exciting thing to me is that he tosses around ideas and thought-provoking possibilities without necessarily drawing conclusions. Some people find that irritating, but I find it very stimulating.