The next morning Willett received a message from the senior Ward, saying that Charles was still absent. Mr. Ward mentioned that Dr. Allen had telephoned him to say that Charles would remain at Pawtuxet for some time, and that he must not be disturbed. This was necessary because Allen himself was suddenly called away for an indefinite period, leaving the researches in need of Charles's constant oversight. Charles sent his best wishes, and regretted any bother his abrupt change of plans might have caused. In listening to this message Mr. Ward heard Dr. Allen's voice for the first time, and it seemed to excite some vague and elusive memory which could not be actually placed, but which was disturbing to the point of fearfulness.