Torchwood series 1 episode 13 (Story 13): Owen's opening of the rift last episode has worldwide consequences.
Warning: May contain Spoilers for
"End of Days"
- Doctor Who 01-09 & 01-10 - "The Empty Child"/"The Doctor Dances" (Suggested viewing - introduction of character.)
- Torchwood 01-01 - "Everything Changes" (Required viewing - introduction of characters, major plot points.)
- Torchwood 01-12 - "End of Days" (Required viewing - continuation of events.)
[OLD] - Things that first appeared in the classic series of Doctor Who (or the film.) Episode List.
For context, the following are also covered:
[NEW] - Things that first appeared previously in the new series of Doctor Who.
- [NEW] Captain Jack Harkness - Was a Time Agent in the 52nd Century, but went rogue and disguised as an American airman tried scamming the Time Agency in 1941 accidentally meeting and joining the Doctor. He first appeared in the new series episodes "The Empty Child" and last appeared in that series in "The Parting of the Ways." He first appeared as a member of Torchwood Three in "Everything Changes."
- [NEW] Torchwood - This "Secret" organisation was created by Queen Victoria in 1879 and named for the Torchwood Estate (Doctor Who "Tooth & Claw") to fight aliens after she met the Doctor and Rose. The British PM (who wasn't supposed to know about Torchwood) order them to fire upon the Sycorax spaceship. Torchwood One (London) were responsible for the "Ghost Shift" (Doctor Who "Army of Ghosts") which led to the Battle of Canary Wharf. In the future, it was well known enough to be a question in "The Weakest Link" (Doctor Who "Bad Wolf"). This group, Torchwood Three first appeared in "Everything Changes."
- [NEW] The Cardiff Rift - A spacial temporal rift, first mentioned in the new Who episode "The Unquiet Dead." It was later featured in the new Who episode "Boomtown." It is the reason for many of the strange events in Cardiff.
- [TW] Weevils - A race that has infested Cardiff.
- [TW] Jack's immortality - When Jack last appeared in Doctor Who ("Parting of the Ways") he was killed by Daleks and resurrected by Rose/Bad Wolf and left in the future. He was revealed to be immortal in "Everything Changes."
- [NEW] Hand in the Jar - The Doctor's hand from "The Christmas Invasion."
- [TW] Bilis Manger - First appeared in the previous episode "Captain Jack Harkness."
- [TW] Diane - Owen's love interest from the Torchwood episode "Out of Time."
- [OLD] Demon-looking things - In the Third Doctor story "The Dæmons," (Season 8) the Doctor suggests that genetic experimentation by the horned inhabitants of the Dæmos may have been the inspiration for myths involving demons, devils and Satan. The Fourth Doctor suspected that Sutekh in "Pyramids of Mars" (Season 13) had gone by many names including Satan. The classic series also had The Destroyer, who appeared in the Seventh Doctor story "Battlefield" (Season 26), but it came from an alternate universe. The Tenth Doctor story "The Impossible Planet"/"The Satan Pit" The Beast, another creature appeared, one that was said to come from before time and may have inspired other demonic images.
- [OLD] The Doctor - Obviously, you know Who.
- [OLD] The TARDIS sound - The icon sound of the Doctor's time machine, the TARDIS materialising. People who know the sound have been known to run to it previously, including Mickey Smith and Jackie Tyler.
The Time Crash blog was created to help New Who fans understand Classic Who references - and to know if something isn't a reference but a new idea. If there's a reference I missed or a subject that you feel needs more explaining, please comment.