Discusses some of Koch's novels with focus on the notion of crossing boundaries and entering new spaces, where transformation of identities is possible. Using sea travel and the sea wall as a boundary which serves to prevent a crossing, the novels focus on liminal spaces, but the transformative potential of such liminal spaces is rarely fulfilled. The notion of 'crossing over' 'serves to help understand Koch's fiction as a unified body of work' (231), representing a coherent vision despite shifts in focus and emphasis.