Original air dates 3 – 24 September 1977.
A lighthouse watches a purple meteor crash into the sea. A fog comes in. The TARDIS appears on the shore.
The power goes out. Leaving it a lightless house. The Doctor goes to investigate. Leela feels something wrong.
Doctor goes to look for missing engineer. Leela confounds the younger lighthouseman by asking for dry clothes and disrobing. She does that.
Doctor finds Ben the engineer, dead. Electrocuted. Everyone blames the generator. The Doctor is suspicious there’s something out there. Lighthousemen don’t want to hear it. Leela goes to hunt it.
The dead engineer, Ben, vanishes. Meanwhile a ship approaches the rocks. The ship strikes the rocks as the credits roll!
The ship crashes into Fang Rock. Doctor, Vince and the old lighthouseman go off to look for survivors. Doctor sees electrical discharge in the generator room, but does not stop. Leela is left blowing the foghorn.
Four nobs from the ship are underfoot.
Doctor becomes worried about what is going on. Leela, of course, is brave and wants to arm themselves against the enemy.
Superstition and fear rules the lighthouse. Doctor tries to keep everyone inside, but they argue. Leela defends his words with her knife.
Older lighthouseman goes down to stoke the boiler, screams. Credits roll.
Tensions build. More death. They’re running out of lighthousemen. Boiler isn’t stoked and horn won’t sound. Monster stalks the halls. Credits roll!
They are officially out of lighthousekeepers. And running out of Englishmen in general.
The Doctor finds a signal generator, where it’s sending some message to its own kind.
Doctor has a converstation with the aliern. Losing a war with the Sontarans, looking for more land.
Last of the Englishmen is killed as the Doctor tries to turn the lighthouse lamp into a weapon. Uses lighthouse to zap invasion force in the nick of time.
Doctor and Leela retreat to TARDIS, flee.