Showing I'll Never Let You Go (Morgans of Nashville) by Mary Burton

LOVE HURTS

He promised to kill her. One night four years ago, Leah Carson’s husband almost succeeded. Philip stabbed her twenty-three times before fleeing. The police are sure he’s dead. But fear won’t let Leah believe it.
 
AND SOMETIMES

It starts with little things. Missing keys. A flat tire. Mysterious flowers. All easily explained away if the pattern wasn’t so terrifyingly familiar. Leah has a new veterinary practice and a new life with no ties to her nightmare. But Tennessee Bureau of Investigation agent Alex Morgan suspects something. And when another woman’s body is found, stabbed twenty-three times, Leah knows her past has found her.
 
IT KILLS

As Leah and Alex untangle the horrifying truth, he watches her, ready for the perfect moment. Until death—that was the vow they made. And a killer always keeps his word…