(written from a Production point of view)
Gretchen J. Berg (born 8 February 1971; age 46) is a writer and producer who is one of the executive producers of Star Trek: Discovery. Together with her writing partner Aaron Harberts she took over as Discovery's showrunner in October 2016, after Bryan Fuller stepped down from this function.  She had previously collaborated with Fuller on Pushing Daisies and Wonderfalls (featuring William Sadler).
Berg, who is from Pittsburgh, and Harberts have been writing partners since meeting at Northwestern University, where both were students. Berg started her line of work as a member of the production staff on Caroline in the City in 1998. She then became as writer and story editor on shows including Bevery Hills 90210, Roswell (again featuring Sadler), John Doe, Pepper Dennis, North Shore, Women's Murder Club, Mercy (with Kate Mulgrew in a recurring role), Off the Map, GCB, Revenge, and, most recently, Reign. She also served as executive producer or supervising producer on many of those shows. She also worked on the TV movie The Deerings and the feature film Valentine in 2001.