NCIS: Hawai’i will end following its season 3 finale, and its (frankly, premature) cancelation is upsetting due to several factors. The CBS police procedural television series, created by Christopher Silber, Jan Nash, and Matt Bosack, is the fourth installment in the NCIS franchise and the third NCIS spin-off overall. As the title suggests, the show takes place in Hawai’i, and it follows the Pearl Harbor Field Office branch of the Naval Criminal Investigative Service, led by Special Agent in Charge Jane Tennant, played by Vanessa Lachey. Unfortunately, NCIS: Hawai’i‘s story was seemingly not meant to last past season 3.

https://screenrant.com/ncis-hawaii-season-4-canceled-disappointing/