Danielle Morrow works tirelessly to rehabilitate retired racing greyhounds and help them find forever homes. She guards her heart as vigilantly as her two adopted greyhounds guard her home. One heartbreak per lifetime is enough for any woman. Knox Donovan expected to be career military, but an injury has resulted in an honorable discharge that leaves him uncertain of his future. He's back home with his brothers in Miami Beach, but he has no intention of staying in a city that holds so many bad memories. Fifteen years haven't softened the pain of their breakup for either Danielle or Knox. But when Knox bonds with Sarge, a retired racing greyhound with issues not unlike his own, Danielle's cool reserve begins to melt. Can she trust her heart to the man who broke it?