Interviews with experts and relatives fuel this investigative docuseries about the tragic 2017 disappearance of a military submarine that shook the world.
Overview：Interviews with experts and relatives fuel this investigative docuseries about the tragic 2017 disappearance of a military submarine that shook the world.
![Official Trailer [Subtitled]](https://i.ytimg.com/vi/J_HjkFaqFTE/hqdefault.jpg)
