‘The sky appears to be reflective,’ Holmes replied, more hesitantly than usual. ‘Perhaps, like Dante’s inner circle of hell, we have ice above us. If you look closely, you will see a reflected glow from something over the horizon. The nearest Earthly equivalent would be the lights of a town or city.’ He coughed. ‘I am merely speculating, of course. It could be an incandescent chicken the size of the North Riding for all I know.’