 In the season finale, "End of Days", Jack expresses existentialist sentiments regarding the religious referring to the apocalypse.Continuing the ghost theme carried in several episodes of "Torchwood", what appear to be the spirits of Lisa and Toshiko's mother appear, as well as Diane who may be dead or trapped in another time.Toshiko's mother warned of something "coming in the darkness", as Suzie Costello had done before.