Vamps and Victims

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.

Harry on her first case and it has been given to her by a close friend. A vampire is suspected of killing his girlfriend. Harry's friend is that boyfriend, but he didn't do it and he's willing to hire Harry to prove that he didn't.
The case becomes complicated and leads to the trail of a serial killer. Now Harry and her friends have to find that serial killer before the next victim falls.