Day One
S01E02 - Airdate: 2006-10-22
Runtime: 50 min
It's Gwen's first day on the job, and it's not going very well. After accidentally releasing a mysterious gas from a comet that landed, a new type of alien is let loose on the streets - an alien that's addicted to sex. Torchwood must find the inhabited body, and prevent any more deaths from this violent form of sex.
Episode details and rating from TVmaze.