Robert Sloman, Barry Letts
Transmitted: 20th May 1972 to 24th June 1972
The Master, in the guise of Professor
Thascales, has constructed at the Newton Institute in Wootton a
device known as TOMTIT - Transmission Of Matter Through Interstitial
Time - with which to gain control over Kronos, a creature from
outside time. The creature is summoned but the effect proves
uncontrollable, so the Master flees.
The Doctor shuts TOMTIT down but the Master later reactivates it,
using it first to ensnare Krasis, High Priest of the lost city of
Atlantis, and then to attack UNIT forces by way of a series of
timeslips. The Master takes Krasis back to Atlantis in his TARDIS in
the hope of stealing the sacred Crystal of Kronos, with which he
aims finally to dominate the creature. The Doctor follows with Jo
but is unable to prevent his enemy from seducing Queen Galleia and
staging a coup. Galleia turns against the Master when she learns
that he has caused the death of her husband, King Dalios.
The Master then unleashes Kronos, destroying Atlantis. The two Time
Lords escape in their respective TARDISes and confront each other in
the time vortex. The Doctor threatens to trigger a 'time ram' - a
devastating collision - but cannot bring himself to do it.
Jo, held hostage by the Master, has no such qualms, and operates the
controls herself. The two TARDISes reappear in a strange void
presided over by Kronos - who now appears as a beautiful female
The time ram has released Kronos, who agrees to return the Doctor
and Jo to Earth. The creature plans to subject the Master to eternal
torment, but the Doctor pleads on his behalf and he too goes free.
EPISODE 1 NOTES
- The Doctor and Jo are heading for the
Newton Institute. The Doctor activates a new "Super Drive"
facility on Bessie which enables the car to travel at excessive
- Interestingly, the pull-lever that the
Doctor uses to activate the "Super Drive" is actually the car's
choke. In previous stories a letter 'C' can clearly been seen on
the control knob. In reality, activating the "Super Drive" would
probably flood the engine and stall the car.
- These scenes were filmed at Old Church
Lane, Hartley Wintney, Hampshire on 7th April 1972.
- This is the first episode/story to
feature the "hand-shaped" trafficator right-turn indicator.
EPISODE 2 NOTES
- Bessie appears in a scene near the beginning of the
episode as the Doctor and Jo pull up in the courtyard of the
- There is also a brief scene later on in this episode
when Sergeant Benton walks past Bessie on his way to the
- These scenes were filmed at Swallowfield
Park, Swallowfield, Berkshire on 4th April 1972.
EPISODE 4 NOTES
- There is only a brief scene featuring
Bessie in this episode. The Doctor then departs in the
TARDIS for Atlantis.
This scene was filmed
was filmed on roads near Stratfield Saye, Hampshire on 7th
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