Ever since her police officer father was killed a few months ago, Grace Abernathy hasn’t wanted to do much of anything.

She’s pulled away from her friends, her grades are plummeting ... it’s a problem. The last thing Grace wants is to be dragged into her older sister Regan’s plan to train a shelter dog as a service dog. But Grace has no idea how involved she’ll get—especially when a mangy mutt named Rex starts talking to her.

Has Grace gone off the deep end? Or might this dog be something really special—an angel? A spirit?

Either way, he is exactly the therapy that Grace needs.