Torchwood - Season 1 Episode 8

Torchwood is called into a murder investigation when a suburban couple are found in their beds with their throats slit and TORCHWOOD written on the wall in their blood. Gwen convinces them to use the gauntlet to reanimate the victims to see if they can get the identity of the killer. They have little success but when they learn that their former colleague Suzie Costello had a connection to the victims, they decide to revive her. Normally, the dead can only be revived for a minute or two at most but in Suzie's case, she seems to have been reanimated permanently. When they learn that she is drawing her life force from a member of the Torchwood team, the others have to find a way to stop her.