A doctor with naval experience is flown to an oil rig in the North Atlantic to deal with an illness. What he finds there is like nothing he has ever encountered before and it is getting worse.

The plot is very similar to Michael Crichton‘s Sphere, although on a larger scale and a different twist. It has a large number of characters as compared to the sparsh Sphere but with multiple similarities between the two, it does feel as if this is the second attempt to tell the same story. While some of the technical information used is slightly confusing, there is nothing that causes the author to stop and have to decypher a passage.

The main characters are likeable without getting into too much detail about them. Some appear to be stereotypical but not to an extreme. The pages turn quickly and the tension builds up as the reader is drawn towards the end of the book.

A good book, similar in style to a James Rollins novel with the obvious similarities to Sphere.