Out of This World (1987): 3x3

Bring Me the Head of Donna Garland

Beano decides to act as a magician for an amateur’s night, but when he uses Evie as an assistant to try out a “”Disappearing Act”” on Donna, Donna disappear’s into another dimension because of Evie’s powers, and when Donna starts to reappear, the only thing that comes back is her head.