Best Kept Secret (Rochester Trilogy, Book 3) by Skye Warren
 
The secrets haunting Beau Rochester come alive.
He doesn’t deserve happiness, but he holds it in his hands. A woman he loves. A child. The past threatens to rip them away. He risks losing them forever.
Jane Mendoza is determined to protect the people she loves from every threat--the mysterious arsonist, the corrupt police force. The darkest danger comes from a place she never expects.
She risks more than her newfound family. She risks her life.