one o'clock
she laughed , perching her lithe length on the arm of a chair , one slender foot swinging slowly back and forth . `` Your play , monsieur . '' `` There is no need to go back farther than this morning , '' he observed . `` We knew that you were to meet Captain Snodgrass and lunch with him at one o'clock at the Rataplan . Your man Marston , when he visited Mr. Carpenter this morning , managed inadvertently to furnish the key-word of the Clephane letter . Do you see whither your meeting with Snodgrass , an ex-officer of the Army , in view of the translation of the letter leads , Madeline ? Marston , I might remark , was quickly apprehended ; if he made a copy of the letter , he had no opportunity to use it .