1. Paramount+: Paramount+ is a streaming service that offers access to various CBS shows and movies, including NCIS. You can watch all episodes of NCIS season 5, including the ending, by subscribing to Paramount+.
2. CBS All Access: CBS All Access is another streaming service that allows users to watch live CBS shows and access on-demand content. You can watch all episodes of NCIS season 5, along with other seasons and episodes of the series, by subscribing to CBS All Access.
3. Amazon Prime Video: Certain seasons and episodes of NCIS, including season 5, may also be available for purchase or rent on Amazon Prime Video. You can check the Amazon Prime Video catalog to see if the specific episode or season you're looking for is available.
4. iTunes: iTunes is another platform where you can buy or rent episodes and seasons of NCIS. You can check the iTunes store to see if the final episode of season 5 is available for purchase or rent.
5. Vudu: Vudu is a streaming service that offers a variety of movies and TV shows for purchase or rental. You can check Vudu's catalog to see if the final episode of NCIS season 5 is available.
It's important to note that the availability of specific episodes and seasons may vary based on your region and local licensing agreements. Some platforms may have exclusive rights to certain content in specific countries or regions.