Shadow Chaser by Christy Barritt

Waking at night to the scent of smoke, Emily Rankin’s first and only thought is to get her daughter, Bree, out of the house. Instead, Emily discovers Bree has been kidnapped. She turns to the Shadow Agency for help—only to find herself face-to-face with the man who had disappeared from her life as fast as he’d entered.
As a covert operative, Austin Greenwich is used to flying solo. But he’s never forgotten Emily and the explosive chemistry they shared. Now, she’s back in his life, and she needs his help. With relentless killers making attempts on Emily’s life, it’s clear someone wants Emily out of the picture—for good.
As Austin and his colleagues at the Shadow Agency chase after the culprits, Austin discovers he has more to lose than he ever assumed. Will they find the little girl in time? Or will the mastermind behind this terror leave the team chasing shadows?