Mariah Lyons risks her life to solve the brutal murder of her father, Dr. Jonathan Lyons, a well-respected academic, who in a stroke of luck comes into the possession of an ancient and highly valuable parchment stolen from the Vatican in the 15th century.

In his first adventure since the revelation that he’s a parent, Dirk Pitt must uncover the truth behind the myth of another long-lost father-figure, Homer’s Odysseus, if he’s going to stop a dangerous cult from reshaping the earth in their own image.
 
Fraternal twins, Summer Pitt and Dirk Pitt, Jr., are working to determine the origin of a strange brown tide infesting the ocean off the shore of Nicaragua when...