The Dark is Rising, a drama by Susan Cooper for BBC World Service.
Episode 12, The Joining of the Signs.
In the low-roofed smithy, Will Stanton stood with his back to the entrance, staring into the fire.
Use the gift well, old one.
Orange and red and fierce yellow white it burned as John Smith pushed at the long bellows arm.
The fire lit Will's spirits, yet it did not properly light the room.
For nothing that Will could see appeared solid.
Only the fire seemed truly real.
The rest...
Was it a mirage?
Does it remind you of anything, Will?
Yes.
It's that half-walled free me again.
The same as that day, in the Manor, when we were in two kinds of time at once.
It is just the same when so we are.
But we're in the time of the Smith, you Merriman.
We went through the Great Doors again.
We travelled back six centuries from my time.
Yes, well we had two tasks to fulfil in this time.
The first was to bring Hawkins body back to his century.