The Betrayal of Anne Frank: A Cold Case Investigation

Spoiler Is the conclusion definitive? Well no, I think it's just a bit too much information with no physical or witness corroboration to say absolutely that their conclusion is correct, BUT having said that, is it a very well researched and well thought out theory - I'd say yes. Taking 5 years to look into it with such depth, commitment and resources is definitely not something to sneeze at, but I'd still recommend reading this with an open mind that their ultimate conclusion is still mostly a theory.
As for the read itself, I highly enjoyed it! It balances well the information dump with careful consideration to the human side of the story. Motivations were not often black and white, the complexity of the situation was not easy to navigate at the time nor after, and it is well laid out to follow without getting bogged down with information. I definitely found myself eager to keep reading and fascinated by all the things I did not know about the Anne Frank story.
I think it's a great read, as long as you keep in mind that it doesn't really ‘solve' the case, as much as it adds a very well thought out and researched theory to the many other ones out there.