October draws to a close and with that we firmly enter into the cold season. As a fantasy writer I find autumn and the early days of winter particularly enchanting. Mist hanging in the fields and curling around trees, leaves swirling in the breeze, grass covered in frost, and our own breath lingering in a white cloud in front of us. There is something mythical about autumn and as a former Gaelic student it is the Celtic tradition and belief system that most often inspires me. As befits the season, I want to share some insights into Halloween or Oidhche Shamhna, as it is known in Gaelic, and the Celtic Otherworld.