Castrovalva is the first serial of the 19th season of the British science fiction television series Doctor Who, which was first broadcast in four twice-weekly parts on BBC1 from 4 to 12 January 1982. It was the first full serial to feature Peter Davison as the Fifth Doctor. The title is a reference to the lithograph Castrovalva by M. C. Escher, which depicts the town Castrovalva in the Abruzzo region, Italy.
Castrovalva (Doctor Who)
The nineteenth season of British science fiction television series Doctor Who began on 4 January 1982 with Castrovalva, and ended with Time-Flight. John Nathan-Turner produced the series, with two script editors: Anthony Root and Eric Saward.
Cover art of the Blu-ray release for the complete season