The radio series began in England in March 1978. The first series consisted of six programs, or “fits” as they were called. Fits 1 thru 6. Easy. Later that year, one more episode was recorded and broadcast, commonly known as the Christmas episode. It contained no reference of any kind to Christmas. It was called the Christmas episode because it was first broadcast on December 24, which is not Christmas Day. After this, things began to get increasingly complicated.
