Devastated by the death of her boyfriend after a routine surgery, fourth-year medical student Lynn Pierce investigates the accident and discovers a string of suspicious deaths at the hospital.

Eighteen-year-old Astrid Bjorklund, studying medicine under Dr. Elizabeth, leaves the town of Blessing and her boyfriend Joshua Landsverk behind to train in Chicago, but when Joshua fails to write and she learns he has left town, she makes an impetuous decision she may later regret.

Medical student Amy Brenner is spending the night on a locked psychiatric ward. Amy has been dreading her evening working on Ward D, the hospital's inpatient mental health unit. There are very specific reasons why she never wanted to do this required overnight rotation. Reasons nobody can ever find out. And as the hours tick by, Amy grows increasingly convinced something terrible is happening within these tightly secured walls. When patients and staff...