Halloween Underground is the culmination of twenty years of photographing people dressed up in fantastical, outlandish costumes against the backdrop of the drab, gritty reality of the New York subway. I captured revelers preening in their outfits as the prelude to the largest Halloween parade in the world - or some private night out where creativity is the currency and mystery and flirtation the prize. On October 31,the subway becomes the unofficial backstage to the main events of the night, the dark tunnels and ghastly lit platforms, the holding room of the supernatural and phantasmagorical.