- Directors: Steve Sekely
- Producers: George Pitcher, Philip Yordan
- Writers: Bernard Gordon, Philip Yordan
- Genres: Horror, Sci-Fi
- Actors: Howard Keel, Kieron Moore, Janette Scott, Nicole Maurey, Mervyn Johns
Triffids are strange fictional plants, capable of rudimentary animal-like behavior: they are able to uproot themselves and walk, possess a deadly whip-like poisonous sting, and may even have the ability to communicate with each other. On screen they vaguely resemble gigantic asparagus shoots.
Bill Masen begins the story in hospital, with his eyes bandaged. He discovers that while he has been blindfolded, an unusual meteor shower has blinded most people on Earth. Masen finds people in London struggling to stay alive in the face of their new, instantly-acquired affliction, some cooperating, some fighting: after just a few days society is collapsing.