Between the devil and the deep blue sea... is the last place you want to be.

Boone Fischer and Emily Durand have been through a lot in the past few years. A new beginning on the island of Cozumel is going swimmingly: their own dive boat, their own business, a new canine friend, and a room with a view. But a chance encounter with a staggeringly wealthy family and their luxury cruise line will bring pandemonium to this peaceful paradise.

In this fourth book of the best-selling Deep Series, Boone and Emily find themselves immersed in a world of wealth and privilege; where jealousy, greed, and deceit can lead down a dark path.

From drift dives in whipping currents to the claustrophobic confines of the infamous Devil's Throat; from the crashing waves on the "wild side" of Cozumel, to a massive mega-yacht on the high seas, Deep Devil will take you to fascinating places. Some beautiful... some deadly.