twelve o'clock
Good morning . '' On towards the Causeway he led me -- for not a word was I capable of uttering ; and just before we reached that artery of Chinatown , from down-river came the deep , sustained note of a steamer 's siren , the warning of some big liner leaving dock . `` That will be the Patna , '' said Harley . `` She sails at twelve o'clock , I think you said ? '' MAN WITH THE SHAVEN SKULL `` Pull that light lower , '' ordered Inspector Wessex . `` There you are , Mr. Harley ; what do you make of it ? ''