"You mean he was reading a letter aloud," said Raymond slowly. "Even so, he must have been reading to some one."
"But why? We have no evidence that there was any one else in the room. No other voice but Mr. Ackroyd's was heard, remember."
"Surely a man wouldn't read letters of that type aloud to himself—not unless he was—well—going balmy."
"You have all forgotten one thing," said Poirot softly: "the stranger who called at the house the preceding Wednesday."
They all stared at him.
"But yes," said Poirot, nodding encouragingly, "on Wednesday. The young man was not of himself important. But the firm he represented interested me very much."
"The Dictaphone Company," gasped Raymond. "I see it now. A dictaphone. That's what you think?"
Poirot nodded.
"Mr. Ackroyd had promised to invest in a dictaphone, you remember. Me, I had the curiosity to inquire of the company in question. Their reply is that Mr. Ackroyd did purchase a dictaphone from their representative. Why he concealed the matter from you, I do not know."
"He must have meant to surprise me with it," murmured Raymond. "He had quite a childish love of surprising people. Meant to keep it up his sleeve for a day or so. Probably was playing with it like a new toy. Yes, it fits in. You're quite right—no one would use quite those words in casual conversation."
[281]
