Frank Castle didn't expect much out of life, not since his family passed, not with the name "The Punisher" attached to him. He certainly didn't expect to fall in love with you either. The only problem, you're his best friend's daughter.

At thirty-six, he's a lethal ghost who views her strictly as an assignment. At twenty-one, she's a reckless scientist who refuses to be told when to breathe. He's supposed to keep her safe and keep his distance. Instead, she's ruining his detachment, and he's realizing some lines are meant to be broken.