Back in the gun-totin', hard-hittin', fast-shootin' days of the Old Wild West, when outlaws ruled the land and the good guys stayed off the streets, a troupe of travelling players - Miss Dodo Dupont, Steven Regret and the mysterious Doctor Caligari - moseyed into the town of Tombstone one October afternoon. Their method of transportation was a mite peculiar though. After all, a police box materialising out of thin air sure ain't the usual way to enter a sedate town like Tombstone.