Innocence doesn’t really exist in The Fall. In the world of this novel, everyone is guilty – even Jesus Christ. The narrator’s philosophy consists of declaring your own guilt (in order to avoid judgment) and condemning yourself to a life of imprisonment. In his viewpoint, being imprisoned means you are guilty, and being free means you are innocent. The classic cause and effect has been reversed; we are not thrown in shackles because we are criminals, rather we are judged as criminals because we find ourselves in shackles.
For Jean-Baptiste, the relationship between innocence/guilt and freedom/imprisonment reflects an inverted cause and effect. In this way, Camus’s philosophy of the absurd manifests itself in The Fall.