Ian plans to derail the Daleks' plan by sabotaging their bomb and the Doctor works to turn the Robomen against them. Afterwards, a tearful Susan remains on Earth with her new love.

What happened to the 108 missing episodes of Doctor Who from the 1960s?

Shaun Ley investigates why the tapes were wiped and how dedicated fans hunted down copies of other episodes in film collections from Cyrpus to New Zealand.

While we may have lost those early programmes, Shaun hears how some home recordings ensured all audio survived.

Producer: Chris Ledgard.

First broadcast on BBC Radio 4 in 2009.

Dermot Murnaghan is a British broadcaster. 

A presenter for Sky News, he was formerly a news presenter at CNBC Europe, Independent Television News and BBC News. He has presented news programmes in a variety of time slots since joining Sky News in 2007.

Bill Mitchell  played a Newscaster in the 1973 Doctor Who television story Frontier in Space.

he also voiced Zor in the 1976 Argo Records audio story Doctor Who and the Pescatons.

Also worked on Super Gran, Riding High, The Bitch, Outer Touch, Ubu, The Strange Case of the End of Civilization as We Know It, The Hanged Man, The Beast Must Die, Billion Dollar Brain, You Only Live Twice, Finders Keepers, Man in the Middle, The Sentimental Agent, Two and Two Make Six, Night of the Eagle, BBC Sunday-Night Theatre, Folio, A Documentary on the Making of 'Gore Vidal's Caligula'

Richard Mayes was an English stage and television actor. 

A well-known face on British television, he was primarily a theatrical actor. He appeared in many roles on stage and small screen, including roles in Doctor Who and as Jebediah Dingle in Emmerdale. 

Other roles include parts in Casualty, Waking the Dead, Doctors, The Bill, Emmerdale, Another Life, The Great Indoors, Middleton's Changeling, Heartbeat, Screen Two, Van der Valk, Dempsey and Makepeace, Juliet Bravo, Top Secret!, Gandhi, Escape, Spy!, Tycoon, Wings, A Bunch of Fives, The Crezz, Out of the Past, The Plane Makers, Emergency-Ward 10, Oliver Twist, A for Andromeda

Arne Gordon was a South African actor, who was cast in the two Doctor Who stories he appeared in by director Richard Martin; he had needed special dispensation from the Ministry of Labour and National Service in order to appear on the show.

As well as Doctor Who, Gordon also had roles in Around the World in 80 Days, The Adventures of William Tell, William Tell, Bad Medicine, Dempsey and Makepeace, Play for Today, Van der Valk, Special Branch, Z Cars, ITV Sunday Night Drama, The Adventures of Don Quick, Husbands and Lovers, Judge Dee, The Jazz Age, ITV Playhouse, Armchair Theatre, Virgin of the Secret Service, The White Rabbit, No Hiding Place, Out of the Unknown.

Dudley Jones played John Dyson in the Doctor Who serial The Tenth Planet.

many other appearances including in Summer Season, Number 10, The Citadel, Airline, Shine on Harvey Moon, The Borgias, Very Like a Whale, Suez 1956, I Didn't Know You Cared, Rosie, People Like Us, The Strange Case of the End of Civilization as We Know It, The Flockton Flyer, Yes, Honestly, Armaguedon, Romance, The Government Inspector, Dickens of London, Forget Me Not, The Onedin Line, Rentaghost, The Georgian House, How Green Was My Valley, Father Brown, The Kids from 47A, Beryl's Lot, Roberts Robots, BBC Play of the Month, The Hole in the Wall, The Sextet, Under Milk Wood, ITV Sunday Night Theatre, All Gas and Gaiters, The Troubleshooters, Manhunt, Doomwatch, Randall and Hopkirk (Deceased), On Her Majesty's Secret Service, Paul Temple, Parkin's Patch, The Virgin Soldiers, As You Like It: An Introduction, The Ronnie Barker Playhouse, Write a Play, Softly Softly, The Man in Room 17, Mystery and Imagination, The Liars, Blackmail, Undermind, A Tale of Two Cities, No Hiding Place, Jezebel ex UK, ITV Play of the Week, The First Gentleman, They Met in a City, The Pursuers, BBC Sunday-Night Play, Friends and Neighbours, Emergency-Ward 10, Black Furrow, BBC Sunday-Night Theatre, Treasure Island, Valley of Song, Robin Hood, The Marvellous History of St. Bernard, A Midsummer Night's Dream, A Run for Your Money, The Last Days of Dolwyn, Once a Jolly Swagman, The Wooing of Anne Hathaway

Leslie Dwyer  was an English character actor of film and television. He is best known for his role as the Punch and Judy man Mr Partridge in BBC sitcom Hi-de-Hi!.

In 1973 he played the Carnival showman Vorg in the Third Doctor story Carnival Of Monsters

He was born in Catford, the son of the popular music hall comedian Johnny Dwyer and acted from the age of ten and appeared in his first film in 1921.

Film roles included In Which We Serve (1942), The Way Ahead (1944), the 1952 remake of Hindle Wakes, Room in the House (1955), the 1959 remake of Hitchcock's The 39 Steps, and Die, Monster, Die! (1966).

He played Sergeant Dusty Miller in the original 1942 production of Terence Rattigan's play Flare Path.

He also took roles in Steptoe and Son, Terry and June, The Sweeney, Wodehouse Playhouse and Z-Cars.

His grave is located in the East London Cemetery.

_{Biography from the Wikipedia article, licensed under CC-BY-SA}