When Detective Kate Rosetti is handed her latest case—a dead body covered in leaves along the side of the road—there's something peculiar about it: a broken heart is carved into the man's arm. It seems to be a foreboding warning that love can be deadly. The deeper Kate gets into the investigation, the more she's forced to face love and murder like never before. Her personal life becomes equally as complicated. A shocking wedding invitation arrives in the mail. Jack Russo is putting pressure on Kate about taking the next step in their relationship. A new cop is hired on at the precinct. But when every love story in Kate's newest case seems to end tragically, how can she believe in happily ever after?