The festival of Samhain is a celebration of the end of the harvest season in Gaelic culture.

Samhain has been celebrated in Britain for centuries. Samhain was the time of year when the veils between this world and the world to come were believed to be at their thinnest: when the spirits of the dead could most readily mingle with the living once again.

Later, when the festival was adopted by Christians, they celebrated it as All Hallows' Eve, followed by All Saints Day.