Terrorist incidents repeatedly occurred in an abandoned mental hospital, and all the normal people who entered the hospital were strangely missing, and no one wanted to set foot here, until three movie lovers wanted to shoot films based on mental hospitals. so they embarked on the road of finding the truth. They encountered mysterious horrors in the mental hospital, ghosts or demons? They can only try their best to escape here and find the truth behind it. Related video "Psychiatric Park" also known as "Greystone Park" recently exposed the latest set of stills, directed by Oliver Stone's son Sean Stone and co-starred by father and son, the story is adapted from a true story abroad, about the horrific murder in a mental hospital. The film, starring Sean, Oliver and other stars, will support video-on-demand abroad on September 13 and release DVD on October 16.