Ronnie's party is going well, but his mother Alice is waiting for her husband Tom to return from the office to help supervise. The doorbell rings, but instead of Tom it's Simon Potter, a strange little boy who Ronnie dislikes, and who knows some unusual and horrifying variations of children's party games. (This episode was recovered as a 16mm black-and-white film telerecording in 2016, and remains the only surviving episode of the series)