During a late evening run, Lindsey Hayden is nearly killed along the Oregon coastal highway. She cannot explain the mysterious doorway that appears in the middle of the road, or the stranger who steps through the lighted entryway to save her life. Alex Northam cannot deny that Lindsey's letters reached across time and changed him. Though he was sent to rescue a child, surely saving Lindsey's life won't have an adverse effect on his mission. Letting her die is not an option. But Alex soon discovers that the fate of the woman he cares for becomes the epicenter of his assignment. His selfless-some say reckless-act may have drastic consequences. Not only for Lindsey but for all of humanity.