Q.E.D. poster

TV series

Q.E.D.

1982TV-PG1 season7.1 / 10

Q.E.D. is a 1982 short-lived adventure series set in Edwardian England, starring Sam Waterston as Professor Quentin Everett Deverill. The Professor was a scientific detective in the mold of Sherlock Holmes, and the series had a smattering of what would later be called steampunk. In the show, the lead character was known primarily by his initials, Q.E.D; the reference here is that Q.E.D. usually stands for quod erat demonstrandum, a statement signalling the end of a proof. The show aired on the CBS network in the United States, and on Channel 4 in the United Kingdom.

Availability

Not streaming in United States

Checked Jul 22, 2026

Q.E.D. premiered March 23, 1982. We don't have a confirmed streaming, rental or purchase option yet.

Synopsis

Q.E.D. is a 1982 short-lived adventure series set in Edwardian England, starring Sam Waterston as Professor Quentin Everett Deverill. The Professor was a scientific detective in the mold of Sherlock Holmes, and the series had a smattering of what would later be called steampunk. In the show, the lead character was known primarily by his initials, Q.E.D; the reference here is that Q.E.D. usually stands for quod erat demonstrandum, a statement signalling the end of a proof. The show aired on the CBS network in the United States, and on Channel 4 in the United Kingdom.

Season 1 episodes

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Episode 1

Target: London

45m7.0 / 10

A wealthy, if abrasive, Harvard professor quits in the middle of a lecture and moves to London where he uses his scientific background to investigate a missing person from a yacht off the British Coast.

Episode credits

Directed by Don SharpWritten by Robert SchlittGuest stars Julian Glover, Sarah Berger, Richard Morant, Frederick Jaeger, Robert Harris, Ronald Lacey, John Abineri, Robert Arden

Where to watch Q.E.D.

Episode 2

The Great Motor Race

45m

Deverill is alerted to a cross-country automobile race for which he lends his talents to one of the entrants. Kilkiss also assists one of the foreign entrants.

Episode credits

Directed by Don SharpWritten by Ronald Austin, James D. BuchananGuest stars Julian Glover, Caroline Langrishe, Tim Woodward, Manning Redwood, George Baker, Henry McGee, Franco De Rosa, Jeff Harding

Where to watch Q.E.D.

Episode 3

Infernal Device

45m

Deverill is contracted to develop a safer detonation mechanism for mining. Meanwhile Jenny and Phipps are kidnapped at a soup kitchen as a way to pressure Deverill into using his invention for political purposes.

Episode credits

Directed by Roy Ward BakerWritten by David KarpGuest stars Julian Glover, Caroline Langrishe, Ian Ogilvy, Barrie Houghton, George A. Cooper, Eric Kent, Bibs Ekkel, Patsy Smart

Where to watch Q.E.D.

Episode 4

The 4:10 to Zurich

45m

After discovering a potent nerve agent, an associate of someone with whom Deverill has been working is shot on Deverill's doorstep. With his dying breath, the man gives Deverill a clue about a train to Zurich.

Episode credits

Directed by Henry HerbertWritten by Jeremy PaulGuest stars Julian Glover, Caroline Langrishe, Paul Freeman, Elizabeth Shepherd, Paul Angelis, Chris Jenkinson, David Auker, Amy Dagley

Where to watch Q.E.D.

Episode 5

To Catch a Ghost

45m

Jenny visits her sick aunt, from whom she learns of a potential ghost haunting the residence. She then enlists Deverill to come investigate.

Episode credits

Directed by Don SharpWritten by Julia JonesGuest stars Caroline Langrishe, Julian Glover, Jean Anderson, Cyril Luckham, Shelagh McLeod, John Vine, Pauline Quirke, Ann Way

Where to watch Q.E.D.

Episode 6

The Limehouse Connection

45mfinale

A series of unexplained deaths among Chinese workers in London leads Charlie and Deverill to investigate. The investigation complicates when British and US officials get involved.

Episode credits

Directed by Don SharpWritten by William FrougGuest stars Caroline Langrishe, Burt Kwouk, Peter Cellier, Sarah Lam, Timothy Bateson, Derek Deadman, Barry Dennen, Rolf Saxon

Where to watch Q.E.D.

Episode information updated Jul 27, 2026

More about Q.E.D.

Cast

Sam WaterstonProfessor Quentin Everett Deverill
George InnesPhipps
A.C. WearyCharlie Andrews
Caroline LangrisheJenny Martin
Julian GloverDr. Stefan Kilkiss
Sarah BergerBetsy Stevens
Richard MorantRichard Stevens
Frederick JaegerKaiser Wilhelm II

Credits

Created by
John Hawkesworth
Written by
David Karp, Ronald Austin, Jeremy Paul, Robert Schlitt, William Froug, James D. Buchanan, Julia Jones

Production details

Status
Ended
Series type
Scripted
Episodes
7
Original language
English

Networks & production

  • ITV1United Kingdom
  • CBSUnited States
  • Consolidated Productions

Themes

adventure comedycomedy mysterydetective comedy