“OK,” Cassie said. “Fair enough. Can you prove where you were from the time you left work on Tuesday till you went back in on Wednesday morning?”
Mark sucked his teeth and picked at a blister, and I suddenly realized he looked embarrassed; it made him seem much younger. “Yeah, actually, I can. I went back to the house, took a shower, had dinner with the rest of the lads, we played cards and had a few cans in the garden. You can ask them.”
“And then?” I said. “What time did you go to bed?”
“Most people went in around one.”
“And can anyone vouch for your whereabouts after that? Do you share a room?”
“Nah. I’ve a room to myself, because of being assistant site director. I stayed up awhile longer, in the garden. I was talking with Mel. I was with her till breakfast.” He was doing his best to sound blasé, but all that arrogant self-possession had vanished; he looked prickly and self-conscious and about fifteen. I was dying to laugh. I didn’t dare look at Cassie.
“All night?” I said, maliciously.
“Yeah.”
“In the garden? Wasn’t that a little chilly?”
“We went inside at maybe three o’clock. After that we were in my room, till eight. That’s when we get up.”
“Well, well, well,” I said sweetly. “Most alibis aren’t nearly that enjoyable.” He shot me a poisonous look.
“Let’s go back to Monday night,” Cassie said. “While you were in the wood, did you see or hear anything unusual?”
“No. But it’s dark out there—country-dark, not your city-dark. No streetlights or nothing. I wouldn’t have seen someone ten feet away. And I mightn’t have heard them, either; there are plenty of noises anyway.” Dark, and wood-noises: that trill went down my spine again.
“Not necessarily in the wood,” Cassie said. “On the dig, or on the road, maybe? Was anyone out there after, say, half past eleven?”
“Hang on, now,” Mark said suddenly, almost reluctantly. “Out on the site. There was someone.”
Neither Cassie nor I moved, but I felt the electric spark of alertness shoot between us. We had been about ready to give up on Mark, check his alibi and put him on a question-mark list and send him back to his mattock, at least for now—in the urgent first days of an investigation, you have no time to waste on any but the most crucial things—but he had our full attention again.
“Could you give us a description?” I asked.
He glanced at me with dislike. “Yeah. They looked a lot like a torch. It was dark.”
“Mark,” said Cassie. “From the beginning?”
“Someone carrying a torch cut across the site, from the estate towards the road. That’s it. All I saw was the torch beam.”
“What time?”
“I wasn’t looking at my watch. One, maybe? A little before?”
“Think back. Could you tell anything about them at all—maybe their height, from the angle of the torch?”
He thought, eyes narrowing. “Nah. It looked fairly low to the ground, but the dark fucks up your sense of perspective, yeah? They were moving slow enough, but anyone would; you’ve seen the site, it’s all ditches and bits of wall.”
“Big torch or small?”
“Small beam, not that strong. It wasn’t one of those big heavy things with the handle. Just a little torch.”
“When you first saw it,” Cassie said, “it was up by the estate wall—where, at the end farthest from the road?”
“Somewhere around there, yeah. I figured they’d come out of the back gate, or maybe over the wall.” The back gate of the estate was at the end of the Devlins’ street, only three houses away. He could have seen Jonathan or Margaret, slowed down by a body and looking for a place to leave it; or Katy, slipping through the dark to meet someone, armed with nothing but a torch-beam and a house key that would never be able to take her home.
“And they went out to the road.”
Mark shrugged. “They cut down that way, diagonal across the site, but I didn’t see where they ended up. The trees got in the way.”
“Do you think whoever it was saw your fire?”
“How would I know?”
“OK, Mark,” Cassie said, “this is important. Did you see a car go past around that time? Or maybe a car stopped on the road?”
Mark took his time. “Nah,” he said, finally and definitely. “A couple went past when I first got there, but nothing after about eleven. They go to bed early around there; all the lights on the estate are out by midnight.”
If he was telling the truth, then he had just done us a huge favor. Both the kill site and the secondary scene—wherever Katy’s body had been hidden through Tuesday—were almost definitely within walking distance of the estate, quite probably on it, and our field of suspects no longer included most of the population of Ireland. “Are you sure you would have noticed if a car had gone past?” I asked.
“I noticed the torch, didn’t I?”
“Which you’ve only just remembered,” I said.
His lip curled. “My memory’s grand, thanks. I didn’t think it was important. This was Monday night, yeah? I didn’t even pay much attention. I thought it was someone heading home from a mate’s house, maybe, or one of the local kids going to meet someone—they hang out on the site at night, sometimes. Not my problem, either way. They weren’t giving me any hassle.”
At this point Bernadette, the squad administrator, tapped on the interview-room door; when I opened it, she said disapprovingly, “Detective Ryan, there’s a telephone call for you. I told the person you couldn’t be disturbed, but she said it was important.” Bernadette has been with Murder for something like twenty-four years, her entire working life. She has a petulant marsupial face, five work outfits (one for each day of the week, which is helpful if you’re too tired to remember what day it is) and, we all think, a Smithers-style hopeless passion for O’Kelly. There’s a squad sweepstakes on when they’ll finally get together.
“Go ahead,” said Cassie. “I can finish up here—Mark, we just need to take your statement. Then we can give you a lift back to work.”
“I’ll take the bus.”
“No you won’t,” I said. “We need to verify your alibi with Mel, and it’s not exactly verification if you have a chance to talk to her first.”
“For fuck’s sake,” Mark snapped, thudding back in his chair. “I’m not making it up. Ask anyone. It was all round the team before we even got up.”
“Don’t worry, we will,” I said cheerfully, and left him and Cassie to it.