1973: The 10th Anniversary
Doctor Who’s first major milestone was marked with an unprecedented moment—one that would be enshrined in future generations of anniversary celebrations. Broadcasting across four episodes from late 1972 and into early 1973, “The Three Doctors” united William Hartnell, Patrick Troughton, and Jon Pertwee’s Doctors on screen for the first time.
“The Three Doctors” was not only Hartnell’s final appearance as the Doctor—the actor passed away two years later—it’s also notable for the first time anyone has described the TARDIS by using the phrase “being bigger on the inside” than it is out, and culminated the ongoing arc of the Third Doctor’s exile on Earth after the events of “The War Games,” allowing him to travel in time and space once more.
