the CULL - Bloodline — Eric J. Gates

Amy Bree's reckless actions result in death and her dismissal from the FBI.

A visit from a mysterious priest propels her back into the fray, as she is partnered with an ex-spy, with fearsome computer skills, and tasked to hunt down and kill the serial killer known as the Blood Sucker.

Their quarry is not what they expect: old, very old, and needs blood to survive.

The body count rises…
and the hunters become the hunted!