Samhain - aka Halloween::Gaelic festival held Oct 'Samhain' is derived from Old Irish meaning "summer's end." It marked the end of the harvest and of the "lighter half" of the year and the start of the "darker half".
The castle -- He didn't know whether to fear, or embrace the sunlight. How rare it shown, and yet, how brightly it lit the shadows. When things are in darkness, secrets can be kept. But light had a strange way of unearthing even the darkest truths.