Some of these have explored and offered accounts of Christie's disappearance in 1926, including the 1979 film Agatha ( with Vanessa Redgrave, where she sneaks away to plan revenge against her husband ) and the Doctor Who episode " The Unicorn and the Wasp " ( with Fenella Woolgar, her disappearance being the result of her suffering a temporary breakdown due to a brief psychic link being formed between her and an alien ).

* The tapes for the revival of BBC show Doctor Who were labeled with the anagram Torchwood, which later went on to be used as the name for a spin-off show.

* The Ark ( Doctor Who ), a 1966 Doctor Who serial

The 2012 Big Finish Productions Doctor Who audio play The Wrath of the Iceni starring Tom Baker takes place during Boudica's uprising against the Romans.

In September 2010, MIT students attempted to put a TARDIS, the time machine from the BBC's Doctor Who, onto a roof.

The Fifth incarnation of Doctor Who, Peter Davison, was noted for wearing a stalk of celery on his lapel, claiming it at one point to be an excellent restorative, though the human olfactory sense was comparatively weak.

" He, too, has become a noted writer of his own high-profile television drama programmes, including Queer as Folk and the 2005 revival of Doctor Who.

In 1966, Kit Pedler, a medical scientist, created the Cybermen for the TV program Doctor Who, based on his concerns about science changing and threatening humanity.

* The Daleks, Cybermen and Toclafane from Doctor Who.

* The Doctor Who serial State of Decay features a vampire named Camilla who in a brief but explicit moment finds much to ' admire ' in the Doctor's female travelling companion Romana who finds she has to turn away from the vampire's intense gaze.

* " Conspiracy ", third episode of the 1965 Doctor Who serial The Romans

* The episode " The Stones of Blood ", of the 16th season of Doctor Who, the Fourth Doctor encounters the Ogri, a silicon-based life form, and in the same sub-plot, the Megara, who are made entirely out of an unknown substance, possibly energy, and they uphold the word of the law, and execute all who break the law with a beam of energy.

# REDIRECT Doctor Who

* Deimos ( Doctor Who audio ), an audio drama

Davros is a character from the long-running British science fiction television series Doctor Who.

Cast in the role of Davros was Michael Wisher, who had previously appeared in several different roles on Doctor Who and had provided Dalek voices in the serials Frontier in Space, Planet of the Daleks and Death to the Daleks.

During Doctor Who Confidential Russell T Davies explained how he believes Davros to have survived the Crucible's destruction in some way, not specifically showing his death for this reason.

Doctor Who Magazine printed several comics stories involving Davros.

Speaking with the Emperor, the Doctor addresses him as Davros, but the Emperor responds " Who is Davros?

Paul Cornell's dark vignette in the Doctor Who Magazine Brief Encounters series, " An Incident Concerning the Bombardment of the Phobos Colony " occurs sometime between " Resurrection of the Daleks " and his assumption of the role of Emperor.

In 2008, Julian Bleach appeared live as Davros at the Doctor Who Prom, announcing that the Royal Albert Hall would become his new palace, and the audience his " obedient slaves ".

* Enlightenment ( Doctor Who ), a 1983 Doctor Who serial

The role of Rost in the Doctor Who serial " Attack of the Cybermen " was meant for her but she allegedly had a disagreement with the production team over her fee and was replaced by Sarah Greene.

In the Doctor Who serial The Green Death ( 1973 ), The Doctor temporarily stumps BOSS by asking it " If I were to tell you that the next thing I say would be true, but the last thing I said was a lie, would you believe me?

* In the Doctor Who serial Snakedance, A Punch and Judy show is briefly recreated despite the alien setting.

He was originally assigned to design the second Doctor Who serial, The Daleks, which would have entailed realising the famous alien creatures.

It is possible that the screwdriver had appeared before Fury from the Deep without the Doctor referring to it by that name: the prop used there appears to be one used by the Doctor in many earlier stories, including the First Doctor's sabotage of Dalek equipment as early as the second serial.

The sonic screwdriver was written out of the series late in season 19, in the Fifth Doctor serial The Visitation.

The newly married Martha Smith-Jones and Mickey Smith are seen being chased by a Sontaran sniper in the last Tenth Doctor serial The End of Time, for unknown reasons.

The Doctor implies in this serial, with his protestations of being " bugged ", that the TARDIS is not normally connected to the Matrix in this manner.

The Doctor attempts to repair the circuit in " Logopolis " and " Attack of the Cybermen ", but the successful transformation of the TARDIS into the shapes of a pipe organ, a painted Welsh dresser ( much to the amusement of Perpurgilliam " Peri " Brown and the Sixth Doctor's annoyance ) and an elaborate gateway in the latter serial was followed by a return to the police box shape.

The Doctor Who serial " The Deadly Assassin ", first broadcast in 1976, introduced a dream-like computer-generated reality, known as the Matrix.

The cave was used for the filming of episodes of the BBC TV series Doctor Who: the serial Revenge of the Cybermen ( 1975 ) starring Tom Baker.

These include the Doctor Who serial The Time Warrior, broadcast in 1973 – 74, and a 1991 movie of Robin Hood starring Patrick Bergin and Uma Thurman.

Bron appeared in a brief scene in the BBC science fiction television series Doctor Who serial City of Death ( 1979 ) alongside John Cleese as art critics in Denise Rene's art gallery in Paris.

" Later, she had a more substantial guest role in another Doctor Who television serial, Revelation of the Daleks ( 1984 ).

The genesis of the novel was in two Doctor Who serials written by Adams, City of Death, ( in which an alien tries to change history at the cost of erasing humanity from existence ), and in particular the cancelled serial Shada, which first introduces a Cambridge professor called Chronotis who is hundreds of years old.

Pemberton had previously served as script editor of Doctor Who and had penned the serial “ Fury from the Deep ”.

* Dreamland ( Doctor Who ), a 2009 animated serial based on Doctor Who

Willcox is also known as the birthplace of Rex Allen, known as " The Arizona Cowboy ", who wrote and recorded many songs, starred in several westerns during the early 1950s and in the syndicated television series Frontier Doctor ( 1958 – 1959 ).

He subsequently reprised the role of the Master in many of the Third Doctor serials, including The Mind of Evil, The Claws of Axos, Colony in Space, The Dæmons, The Sea Devils, The Time Monster and Frontier in Space.

He appeared with Virginia Christine in the episode " The Twisted Road ", the story of a troubled brother-sister relationship which results in the murder of a young woman, of the western syndicated series, Frontier Doctor, starring Rex Allen in the title role.

The characters appear also in 2010 in issues # 3 and # 4 of Star Trek: Leonard McCoy Frontier Doctor.

Reviewers have observed that the precipitating incident of the Earth-Minbari war is very similar to the beginning of the first Earth-Draconia war in the 1973 Doctor Who serial Frontier in Space.

In the near distance, they see the derelict of another ship, which Doctor Hess is shocked to realize is all that remains of the original Frontier Project ship.

In episode 5 of the Doctor Who story Frontier In Space, there is a scene in which the Master ( Roger Delgado ) leads captive Jo Grant ( Katy Manning ) through a rocky terrain.

A novelisation of this serial, written by Terrance Dicks, was published by Target Books in October 1976. the novelisation opens with the cliffhanger from Frontier in Space of a comatose Doctor pursuing the Daleks through space, even though this was removed from the Space War novelisation.

", The Adventures of Wild Bill Hickok, Brave Eagle, Four Star Playhouse, General Electric Theater, Frontier Doctor, Judge Roy Bean ( in the episode " Four Ladies from Laredo "), The Roy Rogers Show, Sheriff of Cochise, and Stories of the Century, in which she played opposite James Best as the teenaged bandit Little Britches.

As other cowboy stars made the transition to television, Allen tried too, cast as Dr. Bill Baxter for a half-hour weekly series called Frontier Doctor.

* Doctor Who and the Space War ( 1976 ) ( adapted from Frontier in Space )

Frontier in Space is the third serial of the tenth season of the British science fiction television series Doctor Who, which was first broadcast in six weekly parts from 24 February to 31 March 1973.

Jack and the Doctor are sentenced to the Lunar Penal Colony, which the Third Doctor was sent to in Frontier in Space.

She also appeared in the first Brian Keith series, Crusader, a Cold War drama, on Jeannie Carson's short-lived CBS sitcom, Hey, Jeannie !, and in the syndicated western series Frontier Doctor, with Rex Allen.

* In Doctor Who, several future timelines-most notably the 26th century's Earth Empire-have a President of Earth ; in the first such story, Frontier in Space, the President's world government is specifically based on the United States government.

He then had a semi-regular role in the British crime drama series Z Cars between 1972-77, and also appeared in the cult TV series Doctor Who in the 1973 story " Frontier in Space ".

His TV direction credits include Coronation Street, The Tomorrow People, Z-Cars and the Doctor Who stories Day of the Daleks ( 1972 ), The Time Monster ( 1972 ) and Frontier in Space ( 1973 ).

* Frontier Doctor ( 1 episode, 1958 )