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: 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-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: 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: 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: 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.
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: Hawaii Five-0 (2010 TV series)
Content:  (with the zero) had 263,000 results while "Hawaii Five-O" (with the letter O) had over 1.7 million. Online voting by viewers determined the ending of the January 14, 2013 episode "Kapu" ("Forbidden"), with two zones, Eastern and Central Time Zones, and Mountain and Pacific Time Zones, each getting their own result. Each alternative ending could be seen online after the episode aired. On February 28, 2020, it was announced that the series would end after 10 seasons and 240 episodes with a two-episode series finale on April 3, 2020. This was confirmed by CBS Entertainment president Kelly Kahl and show's showrunner and co-creator Peter Lenkov.
Title: Orange Is the New Black (season 5)
Content:  In April 2017, it was reported that a cybercriminal had stolen the first ten episodes of the fifth season in a security breach of a post-production company. Netflix failed to respond to ransom demands, and the cybercriminal leaked the episodes online. Netflix confirmed the security breach and an ongoing investigation by federal law enforcement. Multichannel News reported that demand for the series significantly increased over the seven-day period following the leak of the episodes. It was also said that the leak would likely cause a decrease in demand for the fifth season when Netflix releases it in June.

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