In Too Deep

"A serial killer is targeting clients of local sex workers. The victims, all male, are either burned alive or beaten to death. Suited for deep cover work because she is single and without family ties, rookie agent Shannon Ames is young enough to pass herself off as a working girl. But spending her nights on the streets as she hunts for the killer takes its toll. Her personal life is falling apart, her strong moral core tested as never before. And as it becomes clear that she herself is on the killer's radar, Shannon realizes she's up against something truly terrifying - a monster who wants to see her forever marked with his sign of evil."--