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 anymore deaths from the violent form of sex.
Elenco: Eve Myles , John Barrowman , Naoko Mori , Gareth David-Lloyd , Bill Pullman , Bill Pullmann , Kai Owen , Alexa Havins , Burn Gorman , Lauren Ambrose , Mekhi Phifer .