Fifteen years ago, two infants were found, abandoned but otherwise healthy, in a duffel bag at an interstate rest stop. Since then, the two have grown into normal teenagers.
Well, not quite normal.
They can do things that aren’t humanly possible.
In an effort to learn who—or what—they are, the twins follow the trail of a cold case that investigators gave up on years before. In the process, they uncover secrets and dangers that could threaten not just their lives, but the very existence of their kind.