Complex sentence: He continued to try to break into the American market, but in the end sold only one idea to a prime time American network show: a story he had concoted wth Clemens used in the third season of "Remington Steele".
Split into simpler sentences: He continued to try to break into the American market, but in the end sold only one idea to an American network show. A story he had concoted wth Clemens was used in the third season of "Remington Steele".