half past ten
Grant racked his brains to discover who could possibly have a motive for committing the crime . Naturally , his thoughts flew to Ingerman . Surely that sinister-looking person should be forced to give an account of himself instead of , as was probable , being allowed to instill further nonsense into the suspicious mind of P.C. Robinson . There were two morning deliveries of London letters in Steynholme , one at eight and another at half past ten . Grant waited until the postman had left a publisher 's circular -LRB- the only letter for The Hollies by the second mail -RRB- . Then , in a fever of impatience , he jammed on a hat and went out . He would wait no longer .