Ep 30. Season 6, Episode 11, "The God Complex"

The Doctor and his companions are trapped in a strange hotel where each room contains the deepest fear of the person staying in it. As they explore the hotel, they encounter other stranded travelers, all of whom have been lured into the hotel by a mysterious force. As the group succumbs to their fears and begins to turn on each other, the Doctor realizes that he is the only one who can save them from the terrifying creature that has taken control of the hotel. With time running out, the Doctor must confront his own greatest fear in order to defeat the evil that threatens to consume them all. "The God Complex" is a thrilling episode of Doctor Who that explores the power of fear and the strength of the human spirit. As the Doctor confronts his own mortality and vulnerability, he learns that true courage lies not in the absence of fear, but in the willingness to face it head-on. With stunning performances from Matt Smith and the rest of the cast, this episode is a must-watch for fans of the beloved sci-fi series. So, if you want to witness a thrilling adventure of the Doctor and his companions, then "The God Complex" is a perfect episode to watch.