Roswell is an American science fictiontelevision series developed, produced, and co-written by Jason Katims. The series debuted on October 6, 1999, on The WB and moved to UPN for the third season. The final episode aired on May 14, 2002. Sixty-one episodes in total were broadcast over the show's three seasons. In the United Kingdom, the show aired as both Roswell High and Roswell.