Softly, He Dies

Kat Snowden now lives in a different town in a different house. She's left her past behind. It's too heartwrenching to stay and return to the police station where she and her now dead partner worked.
Thinking she's moving to a quiet easy life where she can heal, she's suddenly thrown into a new case that challenges every concept she had about murderers.
Before Kat can get answers, the murderer strikes again. She's about to lose her job as her new boss assumes she's incompetent. And she thinks she's losing her mind as things take a turn for the worse. As the bodies start piling up, she discovers a terrifying clue that points to the perpetrator. Can she convince her boss that she is correct before the killer commits another murder?