Production
- This audio adventure was written to fill the long gap in production between Seasons 22 and 23 while the programme was on an enforced hiatus (see History of Doctor Who). It was the first full Doctor Who adventure to be produced for radio. (A previous production, The Pescatons, is sometimes considered a radio play but it was actually a story record for children.) No further radio productions would be mounted until the mid-1990s when Jon Pertwee provided the voice of the Doctor in two serials.
- Valentine Dyall played the Black Guardian in the television series. Dyall died in June 1985, a month before Slipback would air.
- Eric Saward was a script editor for the series and wrote the stories The Visitation, Earthshock, Resurrection of the Daleks and Revelation of the Daleks.
Read more about this topic: Slipback
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