One characteristic is that they often have a sense of authenticity. Since they are based on real events, they can give viewers a glimpse into historical or real - life situations. For example, in 'Chernobyl', the sets and the details of the nuclear disaster are presented in a very realistic way. Another characteristic is that they can be educational. Viewers can learn about different events, like in 'Mindhunter' where we learn about criminal profiling techniques. And they usually have a strong emotional impact because they deal with real people's stories, such as in 'When They See Us' where we feel the pain and injustice of the wrongly convicted.
Well, 'Band of Brothers' is a remarkable TV series based on a true story. It follows the Easy Company of the 506th Parachute Infantry Regiment during World War II. It shows their training, their battles, and the camaraderie among the soldiers. 'Homeland' is another one, which is loosely based on the Israeli show 'Hatufim'. It involves the story of a CIA officer who believes that a rescued American POW has been turned by al - Qaeda. And 'Ozark' has elements based on real - life money laundering activities in the Ozark Mountains.
Well, 'The Case' is somewhat based on true stories. It uses real events as a foundation but adds fictional details and plot twists to make it more engaging for the viewers.