But the night is Hallowe'en, lady,
The morn is Hallowday,
Then win me, win me, an ye will
For weel I wat ye may. (Tam Lin)
Yes, this is one of those nights when the two worlds cross, and if someone you know has been lost to Faerie, you can go and rescue them. Faerie was also the Land of the Dead for the pre-Christian Irish. Didn't you know it was the Celts who invented Hallowe'en? It is also the Celtic New Year's Eve. We begin our year in the dark and things can only get better. The climactic scene in The Book of Dreams occurs, of course, on Hallowe'en and ends up, appropriately enough, in a graveyard.