To All a Goodnight

A group of female finishing school students and their boyfriends are murdered during a Christmas party by a psychopath dressed as Santa Claus at a rural Calvin Finishing School For Girls in California. The killer's identity is revealed to be Mrs. Jensen, avenging the death of her daughter who was killed in a prank two years prior. As the remaining girls try to escape, they are stalked and murdered one by one by the masked killer, leading to a chaotic and bloody climax that ultimately leaves only two survivors: Nancy and Alex.