He puffed savagely at his pipe for a moment or two before speaking again.
“Then that young skunk Hassendean. . . . He must needs get above himself and ruin the whole scheme, damn him! I can only guess what happened. He got to know about the properties of hyoscine. There was plenty of it at the Croft-Thornton. He must have stolen some of it and used it to drug Yvonne that night. However, that's going a bit fast. I'll tell you what happened, as it seemed to me.”
Markfield paused and glanced inquiringly at the Inspector.
“It's all right,” Flamborough reassured him. “If you don't speak quicker than that, I can take it down easily.”
Markfield leaned over and gave the contents of his flask a gentle shake before continuing his narrative.
“That night, I'd been out late at the Research Station on a piece of work. I mean I'd gone there after dinner for a few minutes. When I finished, I came in by the Lizardbridge Road in my car. It was a bit foggy, and I was driving slowly. Just after I'd passed the bungalow, I met an open car. We were both crawling, owing to the fog; and I had a good look at the people in the other car. One was young Hassendean. The other was Yvonne; and even as I passed them, I could see there was something queer about the business. Besides, what would she be doing with that young whelp away out of town? I knew her far too well to think she was up to any hanky-panky with him.
“It looked queer. So as soon as I was past them, I turned my car, meaning to follow them and stand by. Unfortunately in the fog, I almost ditched my car in turning; and it gave me some trouble to swing round—one wheel got into the trench at the edge of the road. It was a minute or so before I got clear again. Then I went off after them.
“I saw the car at the door of the bungalow, and some lights on in the place which hadn't been there when I'd passed it on my way down. So I stopped my car at the gate and walked up to the bungalow door. It was locked.
“I didn't care about hammering on the door. That would only have put Hassendean on the alert and left me still on the wrong side of the door. So I walked round to the lighted window and managed to get a glimpse of the room through the curtains. Yvonne was lying back in an armchair, facing me. I thought she'd fainted or something like that. The whole affair puzzled me a bit, you see. That young skunk Hassendean was wandering about the room, evidently in a devil of a state of nerves about something or other.
“Just as I was making up my mind to break the window, he bolted out of the room; and I thought he meant to clear off from the house, leaving Yvonne there—ill, perhaps. That made me pretty mad; and I kept my eye on the front door to see that he didn't get away without my catching him. That prevented me from breaking the window and climbing into the room.