Doctor Who (1963)

S03E35 Don't Shoot the Pianist

Mistaking the Doctor for Doc Holliday, the Clanton gang puts him in jeopardy. In a bid to safeguard him, Wyatt Earp takes the Doctor into protective custody, leaving Steven and Dodo vulnerable to the gang's wrath. As tensions rise, they must find a way to reunite and escape the looming threat.