Title: NCIS: New Orleans (season 5)
Content:  NCIS: New Orleans was renewed for a fifth season on April 18, 2018, with a 24-episode order. The season contains its 100th episode. NCIS: New Orleans was renewed for a sixth season on April 22, 2019.
Title: Hawaii Five-O (1968 TV series, season 5)
Content:  The fifth season of Hawaii Five-O premiered on September 12, 1972 and ended March 13, 1973. 24 episodes aired during this season. The Region 1 DVD was released on November 18, 2008.
Title: Castle (season 5)
Content:  The fifth season of American crime-comedy-drama television series Castle, was ordered on May 10, 2012, by ABC. The season aired from September 24, 2012, to May 13, 2013. Two additional episodes were ordered on October 19, 2012, and February 5, 2013, which brought season 5 up to a total of 24 episodes.
Title: List of Hawaii Five-O (1968 TV series) episodes
Content:  Hawaii Five-O is a police procedural television series created by Leonard Freeman for the CBS television network. Starring Jack Lord, the series premiered on September 20, 1968, and ended after 12 seasons on April 4, 1980, during which time 282 episodes were produced and broadcast. The series covers a fictional special state task force for the state of Hawaii led by Detective Steve McGarrett (Jack Lord). To date, all 12 seasons have been released on DVD in Region 1, as well as the first seven seasons for Regions 2 and 4.
Title: Hawaii Five-0 (2010 TV series, season 7)
Content:  On November 17, 2016, it was announced that Oka would be leaving the series after the thirteenth episode.
Title: Hawaii Five-0 (2010 TV series, season 5)
Content:  The fifth season of the CBS crime drama series Hawaii Five-0 premiered on Friday, September 26, 2014, and concluded on May 8, 2015 with a two-hour season finale. The season consisted of 25 episodes. For the 2014–15 U.S. television season, the fifth season of Hawaii Five-0 ranked 20 with an average of 12.28 million viewers.
Title: NCIS: New Orleans (season 5)
Content:  The fifth season of NCIS: New Orleans, an American police procedural drama television series, originally aired on CBS from September 25, 2018, through May 14, 2019. The season was produced by CBS Television Studios, with Christopher Silber as showrunner and executive producer. This season contained its 100th episode.
Title: This Is Us (season 5)
Content:  On May 12, 2019, NBC renewed the series for its fourth, fifth and sixth seasons, at 18 episodes each, for a total of 54 additional episodes. Due to later COVID-related complications, the fifth season was shortened to 16 episodes, as announced during on-air promotion of the season's fourteenth episode.
Title: Hawaii Five-0 (2010 TV series, season 8)
Content:  On March 23, 2017, CBS renewed the series for an eighth season, which premiered on September 29, 2017. Filming for the season began on July 8, 2017 with a traditional Hawaiian blessing. Series star Alex O'Loughlin made both his writer and directorial debut during the season. O'Loughlin directed the eighteenth episode of the season and wrote the story for the twenty-fourth episode of the season. The final script for the season was written around early March 2018. Filming on the final episode of the season concluded in the third week of April. The final episode of the season aired on May 18, 2018.
Title: List of Episodes episodes
Content:  On June 10, 2015, Episodes was renewed for a fifth season to begin filming in 2016 and to begin airing in 2017. Andrew Paul has confirmed that he will be a guest star. On April 11, 2016, it was announced that the fifth season would be the last and contain seven episodes.

Question: how many episodes curse of oak island season 5?
Answer: 18.