The Fold (Peter Clines)

This story features a likeable hero with an unusual ability: a truly intensely photographic memory and a sky-high IQ. Mike remembers effortlessly everything he's ever seen, in perfect detail, and can link any memory with any other to uncover patterns no one else can find. He wants to live an ordinary life teaching high school English, but is drafted by a friend in the defense department to investigate a remarkable project and determine whether its funding should be continued. A group of researchers have apparently developed the ability to transfer matter instantaneously across space, but they maintain absolute secrecy about how the trick works, refusing even to let the DoD know any details until they are ready to go public. When Mike goes in to investigate he finds that they can indeed move things, including people, from here to there as simply as taking a step, but there is something wrong. By the time he tracks it down, it's save-the-world time. A few details got rattled my belief, but by and large the story works well on all levels. I did figure out the main mystery pretty early because it triggered the memory of an old SF story with much the same idea, but that didn't spoil it for me. I recommend it.