Mission Gamma was a miniseries of four novels set during the Star Trek: Deep Space Nine relaunch continuity. All four volumes were published in 2002. The series chronicled the voyages of the USS Defiant on a mission of exploration in the Gamma Quadrant, and Deep Space 9 as Bajor readies itself to join the Federation. In 2008, an omnibus of the first two novels, titled These Haunted Seas, was published.