Texas Target (Mills & Boon Heroes) (An O'Connor Family Mystery, Book 2)

She’s determined to get justice for her sister.The woman US marshal Dawson O’Connor just bailed out of jail isn’t his ex-wife. It’s her identical twin, Summer Grayson—whose existence his enigmatic ex kept from him. Summer believes her sister is in peril…or worse, and poses as her twin to draw out the perpetrator. While Dawson will do whatever it takes to keep her safe.