Star Trek: Titan is a series of science fiction novels set within the Star Trek media franchise, which detail the adventures of the USS Titan under the command Captain William T. Riker, who was part of the main cast the 1987-1994 TV series Star Trek: The Next Generation and its spinoff films. The series was published by Simon & Schuster imprints Pocket Books, Pocket Star, and Gallery Books from 2005 to 2017. The novels are set after the events depicted in the 2002 film Star Trek: Nemesis. Other cast members from Next Generation and other Trek TV series include Riker's wife, Counselor Deanna Troi, who served with Riker aboard the under the command of Jean-Luc Picard; and Alyssa Ogawa who was a ship's nurse on the Enterprise; and Commander Tuvok, who was a cast member on Star Trek: Voyager. Concept In the beginning of the 2002 feature film Star Trek Nemesis, Commander William Riker, who has served as First Officer under Captain Jean-Luc Picard for fifteen years aboard two different starships named Enterprise, marries his longtime on-again, off-again love, ship's counselor, Commander Deanna Troi. By the end of the film, Riker has been promoted to Captain, and he and Troi transfer to the USS Titan, Riker's first permanent command. According to the Titan series book description at Amazon.com, the series take place in what is regarded as a new era, following a decade of conflict between the Federation and enemies such as the Borg, the Cardassians, the Klingons, and the Dominion. Starfleet is renewing its mission of peaceful exploration and diplomacy, a mission spearheaded by the Titan, which in addition to Riker and Troi, is crewed by "the most biologically varied and culturally diverse crew in Starfleet history." Their first mission, in the debut novel, Taking Wing, is to set up power-sharing talks among the various Romulan factions that, in the wake of Praetor Shinzon's death in Nemesis, threaten to plunge the Romulan Empire into civil war. Characters Captain William T. Riker is a human male, who served as the Federation flagships Enterprise-D's and Enterprise-E’s executive officer under Captain Jean-Luc Picard, beginning in 2364. As the vessel's first officer, Riker was offered his own command numerous times, but repeatedly turned them down in favor of remaining aboard the Enterprise, admitting to Picard in Star Trek Generations that he had always hoped he would take command of the Galaxy class starship.