In bestselling author Alex Kava's spine-chilling new thriller, FBI criminal profiler Maggie O'Dell must expose a killer who hides in plain sight.Agent Maggie O'Dell believes she's responding to a threat, but instead walks into a trap. The killer's weapon is a deadly virus, virtually invisible and totally unexpected. His victims appear to be random but, in fact, they are chosen with a revengeful precision.Maggie knows dangerous minds - from hauntingly perverse child predators to cunningly twisted serial killers. Now, she faces a new opponent from inside an isolation ward. Maggie must find clues to catch the killer - while waiting to see if the deadly strain is already multiplying in her body.With every new exposure there's the potential for an epidemic. And Maggie knows she may not live long enough to discover who is the deadliest, most intelligent killer she's ever profiled.