Torchwood Institute is an organisation headed up by Captain Jack Harkness as they investigate paranormal activities in and around Cardiff. The reason for Cardiff is that there is a rift that has opened there. In the first series, the Torchwood Institute are based in Cardiff. Iin the mini-series, they travel to London and in Miracle Day, they travel the world to find out why no one is dying. Gwen Cooper is the newest member of the group, she is recruited at the start of the first series.