Iceberg is an original novel written by David Banks and based on the long-running British science fiction television series "Doctor Who". It was number 18 (of 61) in the Virgin New Adventures range and featured the Cybermen, being a sequel to the serials "The Invasion" and "The Tenth Planet". The events of the novel run concurrently with those of "Birthright". Banks as an actor portrayed the Cyber Leader in several "Doctor Who" serials. A prelude to the novel, also penned by Banks, appeared in "Doctor Who Magazine" #204.