"What!" I exclaimed, in answer to the startling information he gave me. "When did he disappear?"

"Where was he last seen?"

"No, he has not been here. I haven't seen him since Gastrell's reception."

"Oh, yes, I saw you there."

"Yes, very extraordinary."

"No."

"Oh, no."

"Good. I'll come to you at once. Are you at Linden Gardens?"

"Very well, I'll come straight to the club."

Mechanically I hung up the receiver. Curious thoughts, strange conjectures, wonderings, arguments, crowded my brain in confusion. Five days had passed since the date of Gastrell's reception, when I had seen Jack Osborne at supper with the woman he had said he mistrusted. Since that evening, according to what Easterton had just told me, nobody had seen or heard of him. He had not been to his chambers; he had not left any message there or elsewhere; he had not written; he had neither telegraphed nor telephoned.