Hayley Udall tries to make ends meet for herself and her 14 year-old daughter while providing alimony for a horrible ex-husband. She wishes her problems with her ex could go away, and upon venting her frustrations one night, finds herself tangled up in a pact with two people (Melanie and Kevin) to "eliminate" each other's problems. It seemed innocent wishful thinking before, but as people end up dead-including Hayley's ex-husband-Hayley is trapped to fulfill the pact or risk taking the fall for murder. She tries to clear her name but the police (led by Detective Marks) is eyeing her for her ex-husband's death as well as others. Then Melanie abducts Hayley's daughter as leverage for Hayley to follow through and kill one last person. With Detective Marks trying to find the truth, Hayley must hurry to save her daughter and find a way to avoid murder.
Unseen Enemy is an essential exploration of reasons 21st-century populations are experiencing a rash of diseases that were once only outbreaks, but have now become full-blown epidemics. This increased risk that we face, and the ways society and individuals can work together to reduce that risk, are explained to the public through the case studies of three epidemics: Ebola, influenza and Zika. Moving across the globe, we meet doctors, disease detectives and everyday people who have stepped into the horror of an epidemic and emerged deeply changed. Epidemics bring out the best and worst of human behavior, with effects reaching far beyond the tolls of sickness and death.