Deliverance From Evil - Keller County Cops, #4

Tessa Doucet chose to go into mortuary science because the dead can't hurt her. Then a monster from her past turns up on her embalming table, and she's forced to confront the demon she thought she'd put to rest. Disturbed by the case Tessa stirs up, Detective Cash Starkey finds himself falling for her, even though he swore to keep his distance. He doesn't want a relationship, especially not with a woman running from her past.
Yet when Tessa's life is threatened, he runs into the fray, and together they defeat her demons and put the past behind them.