The fine folks over at The Trades.com have posted a review of the third and final book in the Archvillain series, Yesterday Again. They say, in part,
Things wrap up brilliantly, with the resolution of some mysteries that have been around since the first book.
And:
Yesterday Again is one of the best time-travel stories out there. I once sat on a convention panel with author Eric Flint discussing time travel, and I was reminded of Flint’s comment that it’s hard to write a good time travel story because in the end none of the changes can ever matter. That hasn’t stopped Flint from writing some interesting time travel novels, and it was certainly no impediment to Lyga, who just proved himself more than a master.