about twelve o'clock
Westerfelt observed that they turned their backs to the promenaders and seemed to be talking earnestly . `` It 's cool out here , '' said Westerfelt 's partner as they were returning from the walk under the arbor of grape-vines . `` They are all goin ' inside . '' At about twelve o'clock the guests began to leave . Harriet Floyd , followed by Wambush , came in hurriedly after most of the others had gone . Westerfelt was near Mrs. Bradley when she came to say good-night . He heard her say she had enjoyed herself very much , but she spoke hurriedly , as if she did not want to be the last to leave .