"Torchwood" stars John Barrowman as Captain Jack Harkness, the leader of the Cardiff Torchwood Institute. Barrowman also played Harkness in Series 1, Series 3 and Series 4 of the current "Doctor Who" (2005). Eve Myles plays Gwen Cooper, a policewoman who joins the group. Gareth David-Lloyd stars as Ianto Jones, a person who helps out and is a love interest of Jack. Jack Harkness, Ianto Jones, and Gwen Cooper are the central cast members. Also, Naoko Mori plays scientist Toshiko Sato. Burn Gorman plays Doctor Owen Harper.