You can’t help wondering which came first for Brian Castro – the theme/structure of his new novel or the M. C. Escher woodcut reproduced on its cover. It doesn’t seem possible that such an organic match should be fortuitous, although one of Escher’s soubriquets is ‘the poet of the impossible’, and among writers Castro is a prime candidate to share the title. Now that it has been drawn to my attention it is also of course obvious that the seaside hotel in After China was built to Escher specifications.