Scorpion (stylized as </SCORPION>) is an American action drama television series loosely based on the life of computer expert Walter O'Brien. In the series, O'Brien and his friends help each other to solve complex global problems and save lives. The series premiered on September 22, 2014, and airs in the United States on CBS. On October 27, 2014, CBS placed a full season episode order for the first season. In March 2017, CBS renewed the series for a fourth season, which premiered on September 25, 2017.