"Everything Changes" is the first episode of the British science fiction television programme Torchwood, which was first broadcast on the digital channel BBC Three on 22 October 2006.
The episode re-introduces Captain Jack Harkness, who had proved popular in the first series of the 2005 revival of Doctor Who, as the leader of Torchwood, a team of alien hunters.
Through Gwen's discovery of Torchwood, the audience are introduced to team members Owen Harper (Burn Gorman), Toshiko Sato (Naoko Mori) and Ianto Jones (Gareth David-Lloyd).
Suzie Costello, as played by Indira Varma, had also been billed as a series regular prior to transmission, though in a twist the character was revealed as the murderer and killed off at the end of the episode, with Gwen replacing her as a member of the Torchwood team.
Critical reaction to the episode was mixed, with reviewers making both positive and negative comparisons to Torchwood's parent show Doctor Who.
During a murder investigation in Cardiff, police officer Gwen Cooper spies on a group of five people called Torchwood, led by Captain Jack Harkness, exiting an SUV.
This title was worked into the script when Jack describes the idea of "flotsam and jetsam" falling through the Rift into Cardiff.
[4] The website of The Stage entertainment industry newspaper gave "Everything Changes" a positive preview in its coverage following the 18 October press screening of the episode.
Whether that will become grating after a few episodes remains to be seen, but if you like your sci-fi drama a bit punchier than the whimsical Doctor Who, touch wood, you should find a lot to enjoy in the adventures of Torchwood.
"[6] The Guardian newspaper's television reviewer Sam Wollaston also gave the episode a guarded welcome, although he felt that the attempts to make Cardiff appear glamorous were a failure.
It's not yet clear whether Eve Myles as new Torchwood recruit PC Gwen Cooper can fill Billie Piper's boots.
"[8] The use of the alien perfume on the young woman and her boyfriend by Owen has drawn criticism of the character online, with some viewers pointing out this is similar to date rape.