His to Defend

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.
A romantic reunion

…threatened by their past.   

Amina Kelly broke Sergeant Maxwell Layton's heart when she married his best friend. But the detective never forgot her…or the sizzling attraction they never acted on. Years later, while Maxwell and Amina work together to find her ex's killer, Maxwell finds his desire for the nurse stronger than ever. As he puts his life on the line to keep Amina safe, Maxwell realizes that the greatest risk of all might be to his heart. 

From Harlequin Romantic Suspense: Danger. Passion. Drama.