'Stand on the island of glass and look toward the great circle.
' Somebody had known something once.
Why would people not keep records? Three years ago Rebecca was drawn into hunting for a doorway to another world, and cannot forget the terrible consequences of finding it.
And it seems she is still involved.
When the heating in her flat breaks down, Rebecca pays a visit to her friend in Oxford - good company, a change of scene, and warmth; what could be better? But by Sunday.