Terror Train (1980)

After a fraternity prank gone wrong, one of the pledges ends up in an insane aslyum. Three years later, the fraternity charters a train for a graduation costume party. But as the students board the train, one of their friends is killed and an unknown person gets on the train wearing his costume.

When the killings start, Alana realizes that everyone who is dying had a hand in the prank. The conductor who found more than one dead body does a search of the train and tries to keep the students together so no one will be harmed. But you know how that goes. There is always someone who wanders off and figures by hiding alone in a deserted area they will be safer than remaining with the others.

Typical 80s slasher with Jaime Lee Curtis, but the train setting means that no one can escape. Also David Copperfield does card tricks accompanied by dance music. It would have been better if he was also on roller skates.