“Did you know the late Mr Matthews well?”

Rumbold smiled faintly. “I doubt whether anyone did, Superintendent. I certainly knew him.”

“Perhaps you can help me over a small matter,” Hannasyde said. “Did Mr Matthews ever make any mention to you of any business in which he was interested?”

Rumbold frowned. “I don't think I quite understand. Do you mean some speculative venture? He did once or twice ask my opinion of investments he thought of making.”

“No, that wasn't what I meant. You don't know whether he was engaged in any business which his family didn't know about?”

,He never mentioned it to me if he was,” answered Rumbold. “What sort of a business?”

“That I can't tell you. I thought it possible Mr Matthews might have confided in you.”

Rumbold shook his head. “No, he never spoke of anything like that.”

Hannasyde sighed, and said: “He seems to have been very reticent. Tell me, did you happen to see him on the day he died?”

“No, I was away. I only got back last week.”