Star Trek: Errand of Vengeance Series by Kevin Ryan

Lt. Jon Anderson is the newest security officer aboard the U.S.S Enterprise. He joins the crew at a time of mounting tension between the Federation and the Klingon Empire. Previous battles have been inconclusive, but Starfleet Command fears that the Klingons are gearing up for a major offensive. The Enterprise would be on the front lines of an all-out interstellar war.But Lieutenant Anderson has a secret: he is actually a Klingon infiltrator assigned to sabotage Starfleet from within... moreLt. Jon Anderson is the newest security officer aboard the U.S.S Enterprise. He joins the crew at a time of mounting tension between the Federation and the Klingon Empire. Previous battles have been inconclusive, but Starfleet Command fears that the Klingons are gearing up for a major offensive. The Enterprise would be on the front lines of an all-out interstellar war.But Lieutenant Anderson has a secret: he is actually a Klingon infiltrator assigned to sabotage Starfleet from within. His first mission: kill Capt. James T. Kirk. less

There are more than four hundred sagas aboard the "Starship Enterprise"(TM), one for each of the unique men and women serving under the command of Capt. James T. Kirk. For years their personal adventures, their individual struggles and successes, have gone largely untold...until now.The "U.S.S. Enterprise"(TM) is patrolling the Klingon border when sensors detect a massive power source on a planet supposedly populated only by a race of primitive humanoids... moreThere are more than four hundred sagas aboard the "Starship Enterprise"(TM), one for each of the unique men and women serving under the command of Capt. James T. Kirk. For years their personal adventures, their individual struggles and successes, have gone largely untold...until now.The "U.S.S. Enterprise"(TM) is patrolling the Klingon border when sensors detect a massive power source on a planet supposedly populated only by a race of primitive humanoids. Suspecting some sort of Klingon plot, Captain Kirk decides to investigate the matter personally, beaming down to the planet with Dr. McCoy and a team of security officers.But Kirk is in more danger than he knows. Among the landing party is Lt. Jon Anderson, a Klingon infiltrator on an undercover mission aboard the Enterprise. Anderson does not know if the Empire is at work on the unnamed planet, but if it is, then his duty demands that Kirk be stopped -- by all means necessary. less

Every person has a story, and those who are lucky enough to share the voyages of Capt. James T. Kirk aboard the "Starship Enterprise" (TM) have stories unlike anyone else's. Some live, some die, but even those who serve below deck sometimes make all the difference in the universe!The news from Starfleet Command is grim: a full-scale war against the Klingon Empire is coming, a war that the Federation may not be able to win. In anticipation of a monumental conflict, the "U.S.S... moreEvery person has a story, and those who are lucky enough to share the voyages of Capt. James T. Kirk aboard the "Starship Enterprise" (TM) have stories unlike anyone else's. Some live, some die, but even those who serve below deck sometimes make all the difference in the universe!The news from Starfleet Command is grim: a full-scale war against the Klingon Empire is coming, a war that the Federation may not be able to win. In anticipation of a monumental conflict, the "U.S.S. Enterprise" (TM) is assigned to guard a vital starbase located perilously close to Klingon space.But even as Kirk's mission brings him into a tense confrontation with an invading Klingon battle cruiser, an equally deadly menace lurks within the ranks of his own crew: Klingon infiltrator agents, posing as Starfleet officers and sworn to destroy the enemies of the Empire -- even at the cost oftheir own honor! less