Under His Skin by Rhonda Russell

When newly-minted Ranger Security agent Jeb Anderson is sent undercover to investigate thefts at a seniors residence, the last thing he expects is to be attracted to his top suspect!
How…inconvenient.
Resident massage therapist at Twilight Acres, Sophie O’Brien isn’t the least bit worried about being at the top of Jeb’s list because, much to her endless chagrin, she’s too busy imagining what’s underneath his clothes. She knows there’s more to this guy than meets the eye…and what meets the eye is pretty damned intriguing….
And the kicker? This badass has an equally sexy twin!