The Tenth Doctor once took Donna Noble to Shan Shen. She had her fortune read by a fortune teller working with the Trickster's Brigade. After the fortune teller's attempt to change history backfired, all of the writing on the planet — including that on the Doctor's TARDIS — changed into the phrase "Bad Wolf". This, coupled with the ominous tolling of the Cloister Bell, warned the Doctor that the end of the universe was approaching. (TV: Turn Left)