about one o’clock
He went first to the theatre . Here , after some trouble , he found those who had the place in charge , and , by questioning them , he learned that Beatrice had left by herself in a cab for her home , and that Langhetti had remained some time later . He then went to Beatrice 's lodgings to question the landlady . From there he went to Langhetti 's lodgings , and found that Langhetti had come home about one o'clock and was not yet up . Beatrice , therefore , had left by herself ; and had not gone any where with Langhetti . She had not returned home . It seemed to him most probable that either voluntarily or involuntarily she had come under the control of Potts .