Get out your best witches' costumes and fake spider webs: Halloween is back! Every 31 October, the little ones go trick-or-treating around the neighbourhood. But where exactly does this festival come from? This traditional pagan celebration, which originated in the United Kingdom before spreading to the United States, marks the beginning of autumn on the eve of All Saints' Day. Now as commercial as it is festive, Halloween is a time for dressing up and paying homage to the "monsters" of popular culture. To mark the occasion, this week's album is decked out in Hallowen colours to bring you some of our best shots.