All episodes Season 1 S01E20 1964-04-04 25 min 1960s BBC

Doctor Who

Assassin at Peking (Marco Polo, Part Seven)

TV Flash files “Assassin at Peking (Marco Polo, Part Seven)” as hour 20 of 700 in the TV Flash guide — Doctor Who (1963–) on BBC, season 1, episode 20, aired 1964-04-04, 25 min.

From the desk

How this hour is filed

This leaf is S01E20: listed hour 20 of 700 in the Doctor Who guide, hour 20 of 42 in season 1. It aired 1964-04-04 (25 min). The listed hour before it is “Mighty Kublai Khan (Marco Polo, Part Six)” (S01E19). Next is “The Sea of Death (The Keys of Marinus, Part One)” (S01E21). Broadcast log — titles and dates, not a plot bible.

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Catalog log

Broadcast listing — not a TV Flash recap.

Missing episode Arriving in Central Asia in 1289, the Doctor and his companions join the caravan of the famous Venetian explorer Marco Polo as it makes its way from the snowy heights of the Pamir Plateau, across the treacherous Gobi Desert and through the heart of imperial Cathay.   Having witnessed many incredible sights and survived a variety of dangers, they arrive at the mighty Kublai Khan's Summer Palace in Shang-tu, where the Doctor strikes up an extraordinary friendship with the now-aged ruler. They move on at last to the even more sumptuous Imperial Palace in Peking, where the travellers save the Khan from an assassination attempt by the Mongol warlord Tegana — supposedly on a peace mission — before departing once more in the TARDIS.

Viewer FAQ

Where does Assassin at Peking (Marco Polo, Part Seven) sit in the Doctor Who guide?

S01E20 is listed hour 20 of 700 — hour 20 of 42 in season 1, season 1 episode 20.

When did Doctor Who S01E20 air?

Assassin at Peking (Marco Polo, Part Seven) aired 1964-04-04 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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