The last person service dog trainer Seth Hudson ever expected to see again was Caroline Bright, the woman who broke his heart. Tragedy shattered Caroline's faith in him twelve years ago, but now the single mom is back to ask for help training a medical alert dog for her daughter, who has diabetes. Despite the tension between them, Seth can't bring himself to refuse, even though training will mean spending lots of time together. Little Nina instantly bonds with Spud--and Seth can't help adoring Nina. As old feelings resurface and their hearts begin to heal, can he show Caroline trust is worth rebuilding...especially if love comes next?