28 March

History of the Doctor Who universe

 * 1963 - Lizzie Lewis is murdered by Ed Morgan. (TW: Ghost Machine)

History of Doctor Who

 * 1964 - "Mighty Kublai Khan", Episode 6 of FDW: Marco Polo.
 * 1970 - DW: The Ambassadors of Death, Episode 2 was first broadcast.
 * 1987 - Patrick Troughton died.