Prime Obsession

So I finally finished reading John Derbyshire's Prime Obsession which started off quite inspiringly but finished in a quagmire of handwaving about complicated mathematics that just leaves the reader diappointed. I supposed the book's goal of presenting the Riemann Hypothesis to the general reader was bound to end this way, but the first half of the book or so did a great job of interweaving a strong historical narrative with some well explained mathematics. Things really went off the rails when Derbyshire abandoned historical progressive to explore the various paths attempts at proving the Hypothesis have taken mathematicians. After such a good start it was sad to see it end this way, but it seems that some authors just don't have the stamina to complete what they set out to do and yet are unwilling to abandon that scope for a more restricted one.