Falling: A Bad Boy Billionaire Romance (The Blackthorn Brothers #5)
Cali MacKay

While I hate to lose a client, it doesn't break my heart when the heiress ignores my instructions and does something stupid to get herself killed. And when Isabelle begs me to keep her alive, there's no way I can turn her down. Not when I haven't been able to shake her from my thoughts from the moment I laid eyes on her.
In typical Blackthorn fashion, I'm falling for her fast and hard. But there's still a killer on the loose, and now it's not just her life that's at stake, but my heart, and there's a damn good chance I'm going to lose them both.
*** This story has a Happily Ever After for the couple and can be read as a stand alone, though there are small plot points that will continue in upcoming books. ***