Continuity
- The Cybermen in this story post-date The Tenth Planet and The Invasion, as one of the Cybermen mentions the death of Mondas, the Doctor's defeat of the advance Earth invasion party and his encounter with them on Planet 14 (which was mentioned in The Invasion). At this point in their development the Cybermen have not yet colonised themselves on their new home world of Telos as demonstrated when they fail to recognise the reference via the Doctor. In Beyond the Vortex, Nicholas Briggs mentions that the Cybermen voices in the story were a mix of the ones used in the 2006 series and The Invasion.
- The Time Ring first featured in Genesis of the Daleks and also features in the next Eighth Doctor season finale, Sisters of the Flame/Vengeance of Morbius.
- The Headhunter first started chasing Lucie in Blood of the Daleks. She returns in the Series 2 story Grand Theft Cosmos, alongside Karen from this story.
- Straxus returns in Sisters of the Flame/Vengeance of Morbius.
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Famous quotes containing the word continuity:
“Every society consists of men in the process of developing from children into parents. To assure continuity of tradition, society must early prepare for parenthood in its children; and it must take care of the unavoidable remnants of infantility in its adults. This is a large order, especially since a society needs many beings who can follow, a few who can lead, and some who can do both, alternately or in different areas of life.”
—Erik H. Erikson (1904–1994)
“The dialectic between change and continuity is a painful but deeply instructive one, in personal life as in the life of a people. To “see the light” too often has meant rejecting the treasures found in darkness.”
—Adrienne Rich (b. 1929)
“If you associate enough with older people who do enjoy their lives, who are not stored away in any golden ghettos, you will gain a sense of continuity and of the possibility for a full life.”
—Margaret Mead (1901–1978)