Doctor Who (season 9)

 
The ninth season of British science fiction television series "Doctor Who" began on 1 January 1972 with "Day of the Daleks", and ended with "The Time Monster".
Casting.
Main cast.
Jon Pertwee continues his role as the Third Doctor, as does Katy Manning playing Jo Grant.
Recurring cast.
Nicholas Courtney, John Levene and Richard Franklin continue their roles of Brigadier Lethbridge-Stewart, Sergeant Benton and Captain Mike Yates respectively.
Roger Delgado returns to play The Master in "The Sea Devils" and "The Time Monster".
Guest stars.
Alan Bennion makes his second of three appearances in the series playing an Ice Warrior, portraying Lord Izlyr in "The Curse of Peladon" and Valentine Palmer plays Monia in episodes 3 and 4.
Serials.
The first serial, "Day of the Daleks", saw the return of the Daleks for the first time since Season 4's "The Evil of the Daleks" in 1967. This was also the first time that the Daleks had been seen in colour in the television series (they had been in colour in the two films starring Peter Cushing produced in the mid-1960s).
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Broadcast.
The entire season was broadcast from 1 January to 24 June 1972.