A group of documentary filmmakers are filming a TV special about the events which occurred at the famous and mysterious abandoned Cain Hill asylum many years earlier, and the unexplained abductions and murders that have occurred at the site since then
The group soon learn that one of the inmates never left Cain Hill at all
![三个火枪手：达达尼昂[预告片]](https://img.lzzyimg.com/upload/vod/20241108-1/3c39ff31dbbf08722d3910da2ded5cf6.jpg)
