Thomas Rider has a secret. For the last five years, he's led an off-the-books governmental team of time travelers into the past to perform "Event Alterations." His boss, CIA big wig Jeffrey Parker, will stop at nothing to rewrite America's history (and the World's, for that matter), but Thomas? Something's changed. Time travel no longer carries the flare it once did, and a seemingly insignificant mistake while assassinating Hitler makes things all...