two o'clock
`` She 's come home in Stillman 's car , '' flashed through Mrs. Robson 's mind , as she sat up in bed . At that moment Mrs. Finnegan 's cuckoo clock , sounding distinctly through the thin flooring , warbled twice with a voice of friendly betrayal . `` Mercy ! it 's two o'clock ! '' she muttered . `` I wonder if Mrs. Finnegan is awake ? ... I do hope she heard the automobile !