Non-fiction books I've read lately

 This topic from Long and Short Reviews was an easy one, as there's only one non-fiction book I've read in the last few months - everything else has been fiction, and I've got a TBR stack a mile high. However, when this one came out I put everything else aside so I could dig into it.

It was "The Princes in the Tower" by Philippa Langley.

I've been a Ricardian for years and have always been fascinated by the case of the Princes in the Tower, so I was very interested to see what new evidence Philippa Langley had found. It turns out, of course, that the answer was one that I'd often considered was plausible myself - that Lambert Simnel and Perkin Warbeck, who challenged Henry VII for the throne, were actually Edward V and Prince Richard, having been hidden away in foreign countries for years. 

Whether this will be laid down as official history at any point is open to question. History tends to be written by the winners, and there are enough powerful Tudor historians who would immediately dismiss any evidence that Richard III didn't kill the princes. However, I personally found Langley's evidence convincing, so we'll see.

So which non-fiction books have you read recently?