The Day of the Triffids

The Day of the Triffids was a book published in the 1950s. (PROSE: Wolfsbane) It was also made into a film. (PROSE: Synthespians™)

Fitz Kreiner was familiar with The Day of the Triffids. (PROSE: EarthWorld)

When the Fourth Doctor described how Hester Stanton could use her control over plants to make them attack people, Harry Sullivan said that it would be like Day of the Triffids. (PROSE: Wolfsbane)

Marcus Brooks had seen the film Day of the Triffids. (PROSE: Synthespians™)

Behind the scenes

 * Carole Ann Ford appeared as Bettina in the 1962 feature film version of The Day of the Triffids (alternative U.S. title: Invasion of the Triffids), on the credits of which her first name is misspelled as "Carol".
 * John Duttine, Maurice Colbourne, Jonathan Newth, Morris Barry, John Hollis, Cleo Sylvestre, John Benfield, Chris Gannon, Christopher Owen, Stephen Yardley, William Morgan Sheppard, Max Faulkner, Edmund Pegge, Donald Pelmear, Desmond Cullum-Jones, Les Conrad (uncredited) and Pat Gorman (uncredited) appeared in the 1981 TV version of The Day of the Triffids.
 * Simon Clark wrote the official sequel to The Day of the Triffids, The Night of the Triffids, in 2001.