This was loads of fun - In fact, I'm not envying whatever book I read next, to have to be the follow-up. A couple years ago, I read and really enjoyed Peter Clines' horror novel "14", and wrote a full review of that one here: 
 http://kentuckyfriedpopcorn.blogspot.... 
 "The Fold" is very similar in style, and also shares the same universe. You don't need to have read "14" to enjoy this one and they're not a series, but some of the same elements and fictional historical figures turn up, and there's even a quirky visit from a couple of familiar characters. I wish more authors would write stand-alone books, as I've become REALLY frustrated and annoyed by the fact that 85% of the books I pick up off the shelf are "Part 9 in the Stretch This Out series", and I just can't be bothered to chase down a whole stack of books just to stay current on the story. But I digress... 
 This is the story of a brilliant, Holmes-like character with a snarky sense of humor who is called to a mysterious government research facility to find out the truth behind a newly-unveiled teleportation gate. I can't say more than that without spoilering the story, but I will say that the great Clines style of oddball characters is back in force - He's really very good at creating a group of disparate individuals who are all endearing in their own different ways, and I'm particularly fond of his leading ladies. They're a far stretch beyond the typical bosomy vapid love interests in so many mystery/horror novels. The book is also nicely peppered with geek references and in-jokes, though not so much that you ever get that shouting feeling of, "LOOK! ANOTHER GALAXY QUEST REFERENCE! This is a GEEK BOOK!" that permeates a number of current SF novels. 
 Thoroughly enjoyable and definitely worth reading. My only demerit is that it's a bit *too* similar to 14 in places - It's clear that the author likes using the same story beats and climax, and I'm hoping for something different in his next, but it's a small fuss compared to a really bouncily likable reading experience.