 Jack shows Gwen around the Hub, including the captured Weevil from the hospital; they then leave the Hub via a pavement slab lift, which takes them to Roald Dahl Plass in front of the fountain.Jack explains that a perception filter exists around the spot they are standing, making them invisible to passersby, explaining why Gwen lost track of the team earlier.Jack takes Gwen to a pub, and, over a drink, explains that the purpose of Torchwood is to help monitor and control the flotsam and jetsam of the time-space vortex that falls to Earth through the rift that exists on the site where the Hub was built.