In Death's Shadow — Marcia Talley

Hannah Ives struggled bravely through the ravages of illness, and fellow patient Valerie Stone was at her side. As cancer survivors they have a lot to celebrate when they meet again, but their reunion is short-lived. Soon Valerie is dead, and a suspicious Hannah must sift through a mountain of clues trying to uncover the cause of her friend's untimely death. But there are those in the big business of living and dying who think she's becoming too curious ... and it's high time her questions were silenced.

Hannah Ives knows what it means to be a survivor. Now she's about to discover what it means to be a target.