Appearance vs. Reality

Nearly every piece of evidence (the canoe, the footprints, the photographs, the two purses) is shown to be a deliberate construction or misinterpretation, underscoring how easily appearances can deceive.

The apparent accident is challenged by the discovery of footprints and other clues.

Nigel dresses up as a 'river-man' to impress lock-keepers, and his philosophy that 'the camera never tells the truth' highlights the theme of deceptive appearances.

The newspaper account presents a dramatic story of a missing person, but the underlying reality of Derek's lonely life and the circumstances of his disappearance remain ambiguous.

The canoe trip appears accidental, but the hole in the canoe and the timing of events suggest a deliberate setup.