A patient at a mental hospital kills the head doctor and takes over, replacing the staff with fellow patients. Things get complicated when the niece of the real doctor makes an unexpected visit.
Did You Know?
The sanatorium was charging $1,000 a month when it was made in 1962. This is equivalent to $8,076 in 2017. See more
There is some confusion over the POV when Dr. Fennick grabs the neck of Doctor Norton when he kills him. The camera's view is out of focus, as if it's showing what Dr. Norton sees as he's being strangled, but it looks like Fennick is actually strangling someone else off to the left side of the camera, which would not be how Dr. Norton would see it. See more