The chronological order of events depicted in the television series Doctor Who and its spin-off, Torchwood, presents a complex interwoven narrative. This interconnectedness allows for character crossovers, shared story elements, and a richer understanding of the Whoniverse. For example, Captain Jack Harkness, a central figure in Torchwood, first appears in Doctor Who, and events in one series can have repercussions in the other.
Understanding the chronological sequence of both series provides a deeper appreciation for the narrative development and character arcs. It clarifies the impact of the Doctor’s actions on the Torchwood Institute and vice-versa. The timeline also illuminates the evolution of the Torchwood Institute from its Victorian origins as depicted in Doctor Who to its modern incarnation as a contemporary organization dealing with extraterrestrial threats.