The books in this series stand alone.
Archaeologist Lisa Donahue and her physician husband James Barber hope their delayed honeymoon in Egypt will be a peaceful trip in an exotic setting. Instead, their Nile cruise is overshadowed by rumors of a deadly disease.
After James recognizes the symptoms of smallpox at Karnak, he is recruited as a medical officer by the Center for Disease Control.
When their cruise ship is quarantined, Lisa is separated from her husband. Terrified that James will succumb to the disease he is fighting, Lisa helps an old flame investigate a plot that could ignite the entire Middle East: infecting Western tourists with smallpox virus stolen from the former Soviet Union.