Doctor Who (1963)

S3E34 A Holiday for the Doctor

The TARDIS lands in Tombstone, Arizona, in 1891, just as the Doctor is seeking relief for a toothache. He discovers that the town's dentist is none other than the notorious Doc Holliday, embroiled in a conflict with the Clanton Brothers and their ruthless gunman, Johnny Ringo. Meanwhile, Sheriff Wyatt Earp is working hard to maintain order. The Doctor, along with Steven and Dodo, ends up teaming up with both the Clanton Brothers and Sheriff Earp to navigate the tense situation.