Lost was an American television series about airplane crash survivors on a tropical island in the South Pacific. Most episodes showed events in the present combined with stories from a character's past or future. The show was created by J. J. Abrams, Damon Lindelof, and Jeffrey Lieber. It was mostly filmed in Oahu, Hawaii. The first episode was shown on September 22, 2004. Since then, a total of six seasons have been shown on television. The series is made by ABC Studios, Bad Robot Productions and Grass Skirt Productions. It plays on the ABC Network in the United States. Other television networks show the series in other countries. Because of its large cast and the cost of filming in Hawaii, the series was one of the most expensive on television.