Thin veil? That is the term I've heard used so many times in my life at this season of ancestor worship - and contact - called Halloween or Hallomas by the Pagans. (I'm linking to a non-commercial site by a Pagan that has far more explaination.) As I understand it, this is the best time of the year for psychic contact with those who have left us behind in this earthly existance.
From the site linked:
"This festival marks the Celtic New Year and the most important festival of the Year. Its usual date is 31 October. It marks the transition from the Western Quarter of the Wheel to the Northern Quarter. The time of the Ritual is dusk, or 9pm.
To the Celts, everything had its beginning in darkness. Darkness and death held the promise of new Life, like the dark of night holds the promise of a new day coming. The Celtic day started at dusk, and their New Year at the dusk of the Year. At the festival on the last evening of October, they honoured their ancestors and their beloved dead. In Catholic countries people still decorate the graves with flowers on this day, like a promise of life at the dark time of the year."
