All episodes Season 7 S07E19 1970-05-09 25 min 1960s BBC

Doctor Who

Inferno, Part One

TV Flash files “Inferno, Part One” as hour 272 of 700 in the TV Flash guide — Doctor Who (1963–) on BBC, season 7, episode 19, aired 1970-05-09, 25 min.

From the desk

How this hour is filed

This leaf is S07E19: listed hour 272 of 700 in the Doctor Who guide, hour 19 of 25 in season 7. It aired 1970-05-09 (25 min). The listed hour before it is “The Ambassadors of Death, Part Seven” (S07E18). Next is “Inferno, Part Two” (S07E20). Broadcast log — titles and dates, not a plot bible.

Doctor Who — Inferno, Part One (S07E19)

Catalog log

Broadcast listing — not a TV Flash recap.

A dangerous experiment throws the Doctor into a doomed dimension

Viewer FAQ

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

S07E19 is listed hour 272 of 700 — hour 19 of 25 in season 7, season 7 episode 19.

When did Doctor Who S07E19 air?

Inferno, Part One aired 1970-05-09 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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