When Doctor Who premiered in 1963, the BBC probably didn’t anticipate it becoming a worldwide phenomenon and the longest-running science-fiction show in history. If they did, the network would have likely not purged their archives of Doctor Who episodes in the ’70s, resulting in many serials from the First and Second Doctor’s runs to become lost to oblivion. By the time Tom Baker stepped into his iconic colorful scarf as the Fourth Doctor, this junking policy had been put to a stop. But that didn’t prevent his memorable run as the Doctor from being plagued by its own archiving or production problems. Namely, a famous unfinished 1979 episode written by sci-fi stalwart Douglas Adams of Hitchhiker’s Guide to the Galaxy fame… Read entire story.