All episodes Season 20 S20E09 1983-02-01 25 min 1960s BBC

Doctor Who

Mawdryn Undead, Part One

TV Flash files “Mawdryn Undead, Part One” as hour 594 of 700 in the TV Flash guide — Doctor Who (1963–) on BBC, season 20, episode 9, aired 1983-02-01, 25 min.

From the desk

How this hour is filed

This leaf is S20E09: listed hour 594 of 700 in the Doctor Who guide, hour 9 of 22 in season 20. It aired 1983-02-01 (25 min). The listed hour before it is “Snakedance, Part Four” (S20E08). Next is “Mawdryn Undead, Part Two” (S20E10). Broadcast log — titles and dates, not a plot bible.

Doctor Who — Mawdryn Undead, Part One (S20E09)

Catalog log

Broadcast listing — not a TV Flash recap.

The Black Guardian strikes a deal with a school student named Turlough to kill the Doctor. He promises him that he will take him back to his home planet if he does the job. Meanwhile The Doctor's Tardis is trapped by a hidden device near Turlough's school.

Viewer FAQ

Where does Mawdryn Undead, Part One sit in the Doctor Who guide?

S20E09 is listed hour 594 of 700 — hour 9 of 22 in season 20, season 20 episode 9.

When did Doctor Who S20E09 air?

Mawdryn Undead, Part One aired 1983-02-01 and is listed at 25 minutes.

Where should I start with the 1960s serials?

William Hartnell's First Doctor is the origin of the TARDIS-and-companions contract. Patrick Troughton's Second Doctor is the proof that regeneration works. Start at a serial whose surviving episodes interest you; missing-episode gaps are part of the classic-era weather.

In the series

Why this series still plays

A Time Lord, a police box bigger on the inside, and regeneration as infinite franchise life: Doctor Who launched from the BBC in 1963 and never really parked. Early black-and-white serials built the mythology; Hartnell-to-Troughton proved the lead could change without ending the show. The longest experiment in serialized reinvention — woolly, weird, endlessly renewable.

November 23, 1963, is a drop that never really parked. BBC's *Doctor Who* launched a Time Lord and a blue police box bigger on the inside, then treated the lead as renewable inventory. **Regeneration is the window.** Sydney Newman, C. E. Webber, and Donald Wilson were among the early architects. Early black-and-white serials built the mythology; companions, sonic screwdrivers, and cliffhangers became ritual. Rex wants woolly national inheritance. Fine. The business model is recasting without ending the show.

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Also in season 20

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