Although Doctor Who Magazine had printed occasional segments of the Chronicles from its very earliest issues, this magazine was the first occasion on which the entire TV Century 21 run had been reprinted. The issue remains the only source for the entire run, outside the original TV 21 issues themselves. The work is often considered a stand-alone graphic novel. However, unlike The Age of Chaos, Dalek is, by indicia if not by common wisdom, the second DWM "Summer Special" of 1994.