Shadow Codex is a study on the emergence of symbols in a monitored and closed environment. The black-and-white film of the abandoned facilities of Turku County Prison (1835–2007), documents the layers of messages drawn, scratched and burned on the cell walls. The markings are pathways to the shadow world, to the darkness of an individual’s psyche, and expose the disturbed underbelly of a society which it simultaneously both generates and hides. The film becomes the codex of a collapsed civilization and at the same time evidence of a forbidden zone in the centre of the city. The flow of images is punctuated by John Cage’s (1912–1992) six-part composition “Perilous Night” (1964), which has been called a journey to the nocturnal side of the soul.