The Perfect Mix by Beth A. Freely

The New Orleans PD needs a helping hand to solve a string of murders and when the new crime investigator shows up, more than crime scenes needs investigating.

Forensic scientist Brody Whalen is NOPDs new kid on the block. He’s good at his job, having helped the FBI solve a few high-profile murders. A family inheritance brings him to the Big Easy and he’s looking forward to just working in the laboratory for a while. But he discovers something bone-chilling while investigating the death of a homeless man, something that ties multiple cases together.
New Orleans has a serial killer on the loose.
Sheriff Grace Cooper is knee-deep in bodies as the homeless population of her city seems to be dropping like flies. She can’t seem to catch a break. Added to her frustration is the handsome new forensic scientist that seems to constantly be in her dreams with his husky laugh and chiseled abs. He makes it hard for her to concentrate on work which makes her mood foul.