The longest-serving actor to portray the time-traveling Doctor in Doctor Who embarked on his first full adventure 51 years ago to the day, but this opened the door for the series to create a plot hole half a century later. Doctor Who’s longevity has been earned by the Doctor’s own ability to regenerate, allowing new […] The post Doctor Who’s Longest-Serving Doctor Debuted 51 Years Ago Today In An Episode That Caused A Plot Hole In 2024 appeared first on ComicBook.com .