Series 1 (Torchwood)

The first series of Torchwood premiered in the UK between 22 October 2006 and 1 January 2007. It saw the introduction of Torchwood Three and its respective team.

The series ties into series 1, series 2 and series 3 (of Doctor Who), with references to the Bad Wolf meme and Harold Saxon, as well as the presence of the severed hand which once belonged to the Tenth Doctor, and the emblem of the Preachers briefly appearing among graffiti. Most of the stories are contemporary, but the series delves into flashbacks and the occasional time travel adventures centred mainly around Jack Harkness. It featured thirteen fifty-minute episodes.

This season starred John Barrowman as Jack Harkness, Eve Myles as Gwen Cooper, Burn Gorman as Owen Harper, Naoko Mori as Toshiko Sato, Indira Varma as Suzie Costello (only star credited for the pilot episode), and Gareth David-Lloyd as Ianto Jones, as well as Kai Owen as Rhys Williams and Tom Price as Andy Davidson.

Indira Varma's character, Suzie Costello, was noteworthy for being billed as a main character in a ruse to deceive audiences into thinking she would be integral to the team and the series itself, only for writers to blindside the viewers with her sudden death and set the more dangerous atmosphere and tone Torchwood exhibited than Doctor Who.

Torchwood also took full advantage of its post-watershed time slot, establishing a much grittier and adult nature than its parent series with use of material which would be unsuitable or otherwise immoral for younger viewers and not intended to be perceived as family-friendly. These attributes include intense sexual elements, strong profane language, heavily pessimistic themes, and gratuitous violence. Later series would somewhat downplay these controversial elements.

Starting with the second story of the first series, every episode opened up with an introductory sequence featuring an opening narration by Jack Harkness: "Outside the Government, beyond the police. Tracking down alien life on Earth, arming the human race against the future. The 21st century is when everything changes, and you've got to be ready."

Recurring

 * Jack Harkness - John Barrowman
 * Gwen Cooper - Eve Myles
 * Owen Harper - Burn Gorman
 * Toshiko Sato - Naoko Mori
 * Ianto Jones - Gareth David-Lloyd
 * Rhys Williams - Kai Owen
 * Andy Davidson - Tom Price
 * Weevil - Paul Kasey
 * Suzie Costello - Indira Varma
 * Bilis Manger - Murray Melvin
 * Lisa Hallett - Caroline Chikezie
 * Diane Holmes - Louise Delamere

Guest

 * Carys Fletcher - Sara Lloyd Gregory
 * Ed Morgan — Gareth Thomas
 * Bernie Harris — Ben McKay
 * Estelle Cole - Eve Pearce
 * Jasmine Pierce - Lara Phillipart
 * Evan Sherman - Owen Teale
 * Mary - Daniela Denby-Ashe
 * Eugene Jones — Paul Chequer
 * John Ellis - Mark Lewis Jones
 * Emma-Louise Cowell - Olivia Hallinan
 * Mark Lynch - Alex Hassell
 * Real Jack Harkness - Matt Rippy

Novels

 * Another Life
 * Border Princes
 * Slow Decay