english: One of the most sought-after lost episodes is part four of the last William Hartnell serial, The Tenth Planetwhich ends with the First Doctor transforming into the Second.
non_english: Épisode ilang ing paling akèh digolèki iku mbokmenawa Épisode 4 saka sérial finalé William Hartnell, The Tenth Planet sing ing adegan pungkasan sang Doctor Kapisan régénerasi dadi sang Doctor Kapindho.