overall' column refers to the episode's number within the overall series, whereas the number in the 'No. See also: List of Hawaii Five-0 (2010 TV series) episodes It was renewed for a second season on May 18, 2011, which premiered on September 19, 2011. Hawaii Five-0 received generally positive reviews from critics and became one of CBS' top rated programs. In addition, the series premiere holds the record for second-most-watched episode with 14.20 million. ' Kai e'e', the fifteenth episode of the season, holds the record for the most watched Hawaii Five-0 episode in the series history with 19.34 million viewers. The first season ranked number 22 for the 2010–11 United States television season, had an average of 11.96 million viewers, and received mostly positive reviews. Taryn Manning receives an 'Also starring' credit for three episodes before departing the series in the thirteenth episode of the season. The series stars Alex O'Loughlin, Scott Caan, Daniel Dae Kim, and Grace Park.

The series centers on the 'Five-0', a specialized task force established by the Hawaiian Governor that investigates a wide series of crimes on the islands, including murder, terrorism and human trafficking. CBS gave a full series order on May 19, 2010, and later ordered a full 24-episode season on October 21, 2010. Production began for the pilot on February 18, 2010. The first season of the police procedural drama series Hawaii Five-0 premiered on CBS on September 20, 2010, for the 2010–11 television season in the United States.

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