Directed by: Brian Kelly
Original Air Date: 22nd October 2006
Sex Gas, Carys Fletcher (possessed), Weevil
Synopsis:Gwen's first day on the job sees Cardiff's nightlife at the mercy of an alien who consumes its victims during orgasm leaving behind dust. Torchwood tracks the alien to a sperm bank, but too late for the patrons within. Gwen tricks it into leaving its host and captures it within a portable cell, where it peters out, itself turning to dust.