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will incur the wrath of their god, Kroll. Kroll is revealed to be a giant squid, which surfaces to feed every few centuries and is the source of the abnormally large amount of methane being mined. Originally a normal size squid, Kroll ingested the fifth segment of the Key to Time and began to grow, becoming a god-like figure to the
Swampies and their descendants.
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have arrived on the third moon of Delta Magna, searching for the penultimate segment of the Key to Time. They find themselves caught in the middle of a dispute between the crew of a methane refinery and the natives (known as 'Swampies'). The
Swampies claim that the crew have disturbed the waters, and
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story a year previously. This was his final assignment on the programme. The actors playing
Swampies were coloured green with a special water-resistant dye ordered from Germany. Unfortunately, the make-up artist failed to order the special dye remover, with the result that many of the actors had to
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Part One was broadcast only a few hours after BBC1 had come back on-air following a strike. The channel had ceased transmitting programmes after the early evening news on
Wednesday 20 December and the dispute was resolved in time for services to resume at 3pm on Saturday 23 December. (BBC2 had been
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After Kroll awakens and begins to attack both the
Swampies and the refinery indiscriminately, the Doctor uses the tracer to retrieve the segment of the Key, which destroys Kroll and instigates cellular regeneration within the creature to produce hundreds of normal-sized squid. This process not only
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The serial is set on the third moon of the human colony world Delta Magna. In the serial, a methane catalysing refinery's operations in the swamp disturbs the giant squid Kroll, which grew in size after ingesting the fifth segment of the powerful Key to Time. When Kroll surfaces, it subsequently
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to write the story, there were two requirements: that it include the largest monster in series history and that Holmes minimise the humour that many scripts from the era were known for. This second requirement was a request from higher up at the BBC. Early titles for the story were
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aired during the week between
Christmas and New Year, when viewing figures are often higher, and was watched by nearly twice as many people as Part One: BBC ratings were also boosted by a strike which had taken the Yorkshire region of ITV off-air for the entire Christmas period.
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take chemical baths to get the green dye off, and many had a green tint for a long period after production was finished. Costume designer Colin Lavers introduced a new tweed coat for the Doctor, which sported four flying duck brooches on its lapels. Around this time, producer
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gave a negative review of the serial, describing it as uninteresting with poor effects, "tepid dialogue and dull characters". However, he felt that some parts were "enlivened by Tom Baker's sprightly performance".
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from Monday 18 September 1978 to represent the marshes featured in the script. Nine days of location filming were afforded to the serial, including two night shoots, more than is usual for a
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was "very slow" with little humour, and "horribly acted" aside from Madoc and
Abineri. They also criticised the "unconvincing" realisation of Kroll. In 2011, Mark Braxton of
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similarly affected, and BBC Radio operated a reduced service.) This disruption accounts for the large drop in ratings compared with the preceding episode, Part Four of
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565:(1976). He had initially been invited to play Thawn, but the role was given to George Baker, who then pulled out. Madoc agreed to play the part of Fenner when
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story. Studio sequences were taped during
October 1978. The serial was directed by Norman Stewart, who had directed the
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saves the planet's inhabitants but removes the source of methane from the refinery. The Doctor and Romana return to the
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and was given the role due to the fact that K9 doesn't appear in this story. (The role had previously been offered to
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on 5 June 1995. This serial, along with the rest of season sixteen, was released as part of the
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993:#312, 9 January 2002, "Archive: The Power of Kroll" by Andrew Pixley, Panini Publishing Ltd.
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in a 2009 poll of the top 200 stories — the fifth lowest of any Tom Baker story.
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fell ill and his duties were taken on by
Anthony Read and production unit manager
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box set on region 2 DVD on 24 September 2007, and in Region 1 on 3 March 2009.
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964:"BBC One - Doctor Who, Season 16, the Power of Kroll - the Fourth Dimension"
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1007:"BBC – Doctor Who Classic Episode Guide – The Power of Kroll – Details"
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Among the cast were a number of actors who had previously appeared in
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1067:"Almost a silent night - BBC - Transdiffusion Broadcasting System"
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playing other characters. The most notable of these was
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914:A novelisation of this serial, written by
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410:from 23 December 1978 to 13 January 1979.
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494:Extensive location filming took place in
68:Learn how and when to remove this message
31:This article includes a list of general
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1259:Internet Speculative Fiction Database
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439:and set off on their next adventure.
7:
589:previously played George Barnham in
2317:Exploration Earth: The Time Machine
979:DVD Production notes, BBC DVD, 2007
451:Location filming took place in the
820:Doctor Who and the Power of Kroll
37:it lacks sufficient corresponding
14:
1317:Original series (1963–1989, 1996)
1266:Doctor Who and the Power of Kroll
1254:Doctor Who and the Power of Kroll
1130:Braxton, Mark (28 January 2011).
599:previously played Van Lutyens in
2666:1979 British television episodes
2661:1978 British television episodes
1160:"Doctor Who: The Power of Kroll"
1132:"Doctor Who: The Power of Kroll"
800:was voted at #174 by readers of
22:
547:who had previously appeared in
1158:Felix, Justin (3 April 2009).
611:(1970) and Richard Railton in
605:(1968), General Carrington in
1:
2352:Classic Doctors, New Monsters
1464:Revived series (2005–present)
1216:. 18 May 2007. Archived from
573:, best known as the voice of
2324:Doctor Who and the Pescatons
2194:The Fourth Doctor Adventures
380:List of episodes (1963–1989)
2159:The Nest Cottage Chronicles
1192:Royal Tunbridge Wells, Kent
392:is the fifth serial of the
305:4 episodes, 25 minutes each
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680:30 December 1978
656:23 December 1978
398:science fiction television
313:23 December 1978
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2464:The Shadow of Weng-Chiang
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2401:
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1977:The Creature from the Pit
1833:The Talons of Weng-Chiang
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2457:The English Way of Death
2331:The Companion Chronicles
2292:The English Way of Death
1798:The Masque of Mandragora
704:6 January 1979
608:The Ambassadors of Death
2232:Trail of the White Worm
1723:Revenge of the Cybermen
1709:The Sontaran Experiment
1102:The Discontinuity Guide
1025:"The Mind of Evil ★★★★"
761:The Discontinuity Guide
621:Broadcast and reception
487:as his least favourite
52:more precise citations.
2607:Destiny of the Doctors
2483:Past Doctor Adventures
2338:Night of the Stormcrow
2218:The Wrath of the Iceni
2086:The Name of the Doctor
1071:www.transdiffusion.org
459:
414:rampages on the moon.
183:Grahame Mallard – Harg
80:1978 Doctor Who serial
2651:Fourth Doctor serials
2471:The Well-Mannered War
2299:The Well-Mannered War
2238:The Oseidon Adventure
2093:The Day of the Doctor
2079:Planet of the Spiders
1963:Destiny of the Daleks
1943:The Armageddon Factor
1716:Genesis of the Daleks
1613:The Armageddon Factor
1257:title listing at the
450:
368:The Armageddon Factor
266:Executive producer(s)
2436:The Romance of Crime
2285:The Romance of Crime
2225:Energy of the Daleks
2100:The Witch's Familiar
2054:The Keeper of Traken
1929:The Androids of Tara
1888:The Invasion of Time
1867:Image of the Fendahl
1771:The Brain of Morbius
1764:The Android Invasion
1743:Terror of the Zygons
1599:The Androids of Tara
1097:"The Power of Kroll"
865:Target novelisations
748:The Androids of Tara
562:The Brain of Morbius
356:The Androids of Tara
2359:Someone I Once Knew
2211:The Renaissance Man
1922:The Stones of Blood
1908:The Ribos Operation
1860:The Invisible Enemy
1853:Horror of Fang Rock
1826:The Robots of Death
1812:The Deadly Assassin
1592:The Stones of Blood
1578:The Ribos Operation
1247:Target novelisation
1187:Doctor Who Magazine
990:Doctor Who Magazine
918:, was published by
821:
810:Commercial Releases
803:Doctor Who Magazine
614:Death to the Daleks
481:Horror of the Swamp
462:When script editor
2419:Missing Adventures
2125:Dimensions in Time
1991:The Horns of Nimon
1936:The Power of Kroll
1606:The Power of Kroll
1489:2008–2010 specials
1236:The Power of Kroll
1198:. 14 October 2009.
1184:"The Mighty 200".
977:The Power of Kroll
931:The Power of Kroll
798:The Power of Kroll
777:The Power of Kroll
753:The Power of Kroll
602:Fury from the Deep
519:John Nathan-Turner
485:The Power of Kroll
473:The Shield of Time
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389:The Power of Kroll
259:John Nathan-Turner
198:Carl Rigg – Varlik
88:The Power of Kroll
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1984:Nightmare of Eden
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1778:The Seeds of Doom
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2019:The Leisure Hive
1819:The Face of Evil
1805:The Hand of Fear
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1549:2023 specials
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1544:2022 specials
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1116:0-426-20442-5
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1085:Cornell, Paul
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587:Neil McCarthy
584:
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567:Alan Browning
564:
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556:The War Games
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477:Moon of Death
474:
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468:Robert Holmes
465:
458:
455:reed beds at
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123:Fourth Doctor
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61:
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20:
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2600:Dalek Attack
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2443:System Shock
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2345:Babblesphere
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2173:
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2123:
2077:
2059:
2052:
2045:
2038:
2031:
2024:
2017:
1996:
1989:
1982:
1975:
1968:
1961:
1941:
1935:
1934:
1927:
1920:
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1906:
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1265:
1264:On Target —
1253:
1235:
1218:the original
1204:
1185:
1179:
1167:. Retrieved
1153:
1141:. Retrieved
1135:
1125:
1107:Virgin Books
1100:
1079:
1070:
1046:. Retrieved
1042:
1033:
1019:
1010:
988:
984:
976:
972:
938:
930:
929:
920:Target Books
913:
885:Target Books
857:
801:
797:
796:
791:
780:
776:
765:Paul Cornell
760:
758:
752:
746:
743:
698:"Part Three"
612:
606:
600:
597:John Abineri
590:
578:
560:
554:
548:
545:Philip Madoc
540:
538:
522:
507:
503:
493:
488:
484:
480:
476:
472:
464:Anthony Read
461:
433:
421:
412:
401:
388:
387:
386:
366:
361:
354:
350:
302:Running time
261:(uncredited)
245:Anthony Read
202:Frank Jarvis
193:John Abineri
172:Philip Madoc
158:
134:
110:
94:
87:
64:
55:
36:
15:
2585:Video games
2366:Out of Time
2175:Demon Quest
2033:Full Circle
1137:Radio Times
1089:Day, Martin
939:Key to Time
896:26 May 1980
782:Radio Times
775:wrote that
722:"Part Four"
571:John Leeson
559:(1969) and
553:(1968–69),
550:The Krotons
498:around the
394:16th season
362:Followed by
351:Preceded by
251:Produced by
223:Directed by
208:Terry Walsh
189:– Rohm-Dutt
178:John Leeson
58:August 2010
50:introducing
2645:Categories
2562:Ghost Ship
1881:Underworld
1675:Television
1657:Doctor Who
1304:Doctor Who
1241:BBC Online
1210:"DVD News"
1105:. London:
945:References
926:Home media
859:Doctor Who
769:Martin Day
732:1979-01-13
708:1979-01-06
684:1978-12-30
674:"Part Two"
660:1978-12-23
650:"Part One"
640:UK viewers
579:Doctor Who
541:Doctor Who
535:Cast notes
509:Underworld
504:Doctor Who
500:River Alde
489:Doctor Who
453:River Alde
443:Production
403:Doctor Who
340:Chronology
332:1979-01-13
317:1978-12-23
231:Written by
218:Production
96:Doctor Who
33:references
2535:Wolfsbane
2429:Evolution
2061:Logopolis
2010:Season 18
2001:(unaired)
1954:Season 17
1899:Season 16
1844:Season 15
1789:Season 14
1734:Season 13
1686:Season 12
1569:Season 16
881:Publisher
527:producer
524:Blake's 7
296:Season 16
195:– Ranquin
187:Glyn Owen
143:Mary Tamm
136:Companion
119:Tom Baker
2553:Novellas
2376:See also
2248:Season 2
2203:Season 1
2110:See also
1469:Series 1
1322:Season 1
1307:episodes
1169:22 March
1164:DVD Talk
1143:22 March
1095:(1995).
815:In print
788:DVD Talk
763:(1995),
634:Run time
617:(1974).
274:Music by
210:– Mensch
180:– Dugeen
174:– Fenner
2450:Managra
1664:stories
1190:(413).
730: (
706: (
682: (
658: (
628:Episode
491:story.
400:series
364: →
349:←
330: (
315: (
204:– Skart
168:– Thawn
46:improve
2614:Legacy
2521:Asylum
2026:Meglos
1113:
1048:28 May
854:Series
834:Author
771:, and
466:asked
437:TARDIS
428:Romana
292:Series
159:Others
147:Romana
112:Doctor
99:serial
35:, but
2407:Books
2309:Other
2148:Audio
1998:Shada
1695:Robot
862:book:
725:21:58
701:21:56
677:23:57
653:23:16
631:Title
1452:Film
1171:2013
1145:2013
1111:ISBN
1050:2017
902:ISBN
690:12.4
479:and
426:and
422:The
418:Plot
408:BBC1
269:None
104:Cast
1239:at
1214:BBC
935:VHS
738:9.9
714:8.9
666:6.5
585:.)
2647::
2235:/
1660::
1559:15
1554:14
1539:13
1534:12
1529:11
1524:10
1447:26
1442:25
1437:24
1432:23
1427:22
1422:21
1417:20
1412:19
1407:18
1402:17
1397:16
1392:15
1387:14
1382:13
1377:12
1372:11
1367:10
1212:.
1194::
1162:.
1134:.
1109:.
1099:.
1091:;
1087:;
1069:.
1058:^
1041:.
1009:.
998:^
953:^
876:49
767:,
575:K9
531:.
475:,
287:5E
145:–
121:–
2319:"
2315:"
2120:"
2116:"
2102:"
2098:"
2095:"
2091:"
2088:"
2084:"
1648:e
1641:t
1634:v
1519:9
1514:8
1504:7
1499:6
1494:5
1484:4
1479:3
1474:2
1362:9
1357:8
1352:7
1347:6
1342:5
1337:4
1332:3
1327:2
1295:e
1288:t
1281:v
1173:.
1147:.
1119:.
1073:.
1052:.
1027:.
1013:.
966:.
734:)
719:4
710:)
695:3
686:)
671:2
662:)
647:1
334:)
319:)
71:)
65:(
60:)
56:(
42:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.