The Resurrection Gauntlet

The Resurrection Gauantlet is an artifact of unkwown origin that is used to bring people back from the dead for a brief period of time in order to allow Torchwood to interrogate them. It first appeared in Season 1, Episode 1: Everything changes when Gwen first encounters Torchwood and sees Suzie Costello use it to interrogate a murder victim. Later in the episode it is revealed that it was in fact Suzie who had killed him so that she could practice using the Resurrection Gauntlet as this would allow her to gain more control over the Gauntlet thus allowing her to bring people back for longer.