Treacy often searches for his images under the cover of night, emerging from a black background or under the cover of various garments. For one of his on-going series, Them, Treacy accumulates a collection of garments which he stitches together into a composite costume. He then wears his creations to create life-size self-portraits in which he stands facing the camera, covered completely in other people's clothes, as if emerging from the black void behind him. Tracey uses these garments to construct creatures whose distortion initially evoke vintage horror-movie aliens and monsters which become genuinely threatening because each piece of fabric then emanates something that happened to its former owner.