Torchwood - Season 1 - Eps 4: Cyberwoman
A Ianto themed episode Ianto Jones hides a very big secret at Torchwood - his half-converted girlfriend from the Canary Wharf Battle - down in the basement. He is quick to hire a Japanese doctor who believes he can "cure" her. But things soon go wrong, and the Cyberwoman's destructive powers are released to the whole of Torchwood. Upgrading is compulsary.
About Torchwood

Title: Torchwood
First Air Date: 2006-10-22
Last Air Date: 2011-09-15
Status: Ended
Rating: 7.3/10 (from 510 votes)
Language: EN
Seasons: 5
Total Episodes: 41
Network: BBC Three BBC One BBC Two
Genres: Sci-Fi & Fantasy, Action & Adventure, Drama
Production Companies: BBC Cymru Wales, CBC, Starz, BBC Worldwide Productions
Synopsis
The exploits of a team of people whose job is to investigate the unusual, the strange and the extraterrestrial.
Cast

John Barrowman
Jack Harkness

Eve Myles
Gwen Cooper

Alexa Havins
Esther Drummond

Mekhi Phifer
Rex Matheson

Bill Pullman
Oswald Danes

Kai Owen
Rhys Williams