Mysterious deaths. An ER poisoned by looming evil. When bodies pile up, can a devoted doctor stop the slaughter? Dr. Emma Steele lives for her patients, her daughter, and wine. When her defenseless patients start dying, she risks her life to find the killer but finds herself trapped. Can Emma overcome the monster to save those she loves, or are they doomed to a fate worse than death? MERCY is the second gritty thriller in the acclaimed ER CRIMES series...