The Flames of Exodus. A North and Swiftwater Thriller, #3

When a scientist and his fiancée go missing somewhere over the vast waters of the Pacific Ocean, Connor North and Kim Swiftwater are called upon to try and find them. Realizing that the task is probably hopeless, they nonetheless agree to at least try to help. However, like a snowball rolling downhill, small clues soon begin to add up, and before long, North and Swiftwater are confronted by a plot of devastating consequences.
From the Solomon Islands to Vietnam, Pakistan, and beyond, the race is on to stop tens of millions from dying.