Colin McCahon was a prominent late-modernist New Zealand painter who temporarily disappeared while visiting the Sydney Botanic Gardens on 11 and 12 April 1984. As Martin Edmond relates, ‘Colin went off to the toilet but didn’t return’, and subsequently ‘spent 28 hours lost on the streets of Sydney’. When discovered, ‘he could not say who he was, carried no identification and seemed disoriented’. This largely speechless disorientation persisted until McCahon’s death.