New York Instances bestselling author Ian Douglas’s virtuosic Superstar Corpsman series proves one thing: The Marines remain the toughest sons of guns in the galaxy.While Bravo Business defuses a hostage crisis on an orbiting mining train station, Navy Corpsman Elliot ‘Doc’ Carlyle not merely saves the lives of a wounded Marine and two extraterrestrial friendlies-he averts a terrorist strike intended to get rid of billions. His reward? Deployment on the recon mission into the darkest depths that you can buy.

Abyss Deep is a foreboding sea planet torn by extremes: boiling storm world using one aspect, unbroken glacier on the other. Humans established a research colony there to study the planet’s giant sea serpents-but the colony has gone ominously silent. When Carlyle’s team arrives, they locate a vessel belonging to a warlike alien types hovering above the atmosphere. But below the snow lurks a secret so chilling it’ll make actually Elliot Carlyle’s bloodstream run cold.