Ashes to Ashes by Tami Hoag

Ashes to Ashes A Sam Kovac and Nikki Liska Novel) by Tami Hoag Some killers are born. Some are made. For him, the question is irrelevant. The taste for murder has always been present, prowling the edge of his consciousness like a hungry wolf. In a wooded Minneapolis park, he performs his profane ceremony. He arranges the body to his satisfaction. He pours the accelerant, anointing the dead. Then he lights the match. "Ashes to ashes." The newspapers have dubbed him the Cremator. He has already claimed three lives. And he won't stop there. He has a plan for greatness. Only this time there is a witness. A teenage runaway with a dubious identity and a murky past, Angie DiMarco has seen the face of the killer in the flickering light of the funeral pyre. Now the police have Angie, but Angie isn't talking. Enter Kate Conlan. She knows all too well the dark side of the human heart. Once an up-and-coming FBI agent, she left the Bureau under a cloud of scandal. Now, instead of catching criminals, she helps their victims and protects witnesses. The job of advocate suits her just fine--until she's assigned to Angie. Not even Kate can tell if the troubled youth is a reluctant witness, a potential victim, or something more troubling still. Her superiors are interested only in badgering Angie for a lead, because the Cremator's latest victim may be the daughter of Peter Bondurant--an enigmatic billionaire businessman with power to influence the case.