Dr Cross and his lover Elaine (Lynn Bari) conspire to have Janet declared insane to make sure the truth does not come out. However when the law is starting to sniff around the case of Dr Cross' dead wife the doctor is persuaded by Elaine to kill Janet to silence her forever...
We don't see how the doctor managed to get away with killing his wife in a full hotel and getting rid of her body unseen which maybe stretches credibility a bit. The sanatorium is creepy, the air of suspense lies heavy over everything. The darkest character is Elaine who is able to wrap Dr Cross around her little finger and manipulate him into committing all sorts of foul deeds.
