The nightmare begins when Kit Franklyn, an expert in criminal psychology, goes to meet an anonymous stranger who's been sending her roses, only to have him drop dead at her feet before she discovers his identity. Medical examiner Andy Broussard learns that the man carried a lethal virus similar to the deadly Ebola. Soon another body shows up with the same bug. As Kit searches for more information about her mystery suitor--and the source of the virus--she comes dangerously close to another killer, this one human.