midnight
`` Miss McIntyre , '' Penfield picked up a page of the deputy coroner 's closely written notes , and ran his eyes down it . `` Your sister has testified that James Turnbull went to your house disguised as a burglar on a wager with you . What were the terms of that wager ? '' `` I bet him that he could not enter the house after midnight without his presence being detected by our new police dogs , '' exclaimed Barbara slowly . She had stopped twirling her gloves about , and one hand was firmly clenched over the arm of her chair . `` Did the dogs discover his presence in the house ? '' `` Apparently not , or they would have aroused the household , '' she said .