The Manhattan Encounter (Harlequin Romantic Suspense Series #1810)

Will the mighty Steele fall? 

He'd faced down madmen with guns, hunted thieves and jumped off buildings for fun. So why is Liam Steele at his wit's end when Dr. Isabella Magnini needs his protection? The brilliant and beautiful scientist's work is revolutionary, and someone wants to keep her insights secret—no matter what it costs.  

When the House of Steele comes together to protect Isabella, Liam realizes just how isolated he's truly become. And as he and Isabella dodge bullets, fires and even an invasion, he knows he's in more danger than ever. Because how will he ever let her go?