Bowler Hat Man wants to talk to the signalman.

Walking on the railway lines.

The singalman's a man of few words.

Chatting over a mug of tea.

Pulling big levers and ringing bells.

The Signalman's been teaching himself fancy maths.

Now he's looking concerned.

It's very slow-moving.

More bell ringing.

Coal.

A train enters a tunnel.

Blatant sexual symbolism.

Ominous bell.

Talking about what happens if there's a collision in a tunnel.

Walking, chatting in the dark.

Bowler Hat Man is going to visit again.

"When you come tomorrow night, don't call out."

Bowler Hat Man leaves.

Bowler Hat Man in bed, with a growing sense of dread.

Next morning.

Misty walking.