I'd come off the brakes and accelerated again almost immediately, shaking my head and muttering curses at all kamikaze deer, and feeling my heart-beat start to slow again after my fright. I'd adjusted my seat belt and looked over at the passenger's seat. Something had moved there, when I'd braked.

I'd left the airmail envelope holding the print-out of Rory's pieces sitting on the passenger seat, because I wanted Ashley to read them. The envelope had slipped forward under the deer-induced sharp braking, plonking down into the passenger footwell. I'd tutted, waited for the straight along the side of Loch Long, checked for traffic, then reached over, retrieved the package from the footwell and put it back on the seat.

And that had set me pondering.

I'd passed through Arrochar in a daze, thinking, of course!

Ashley read the relevant passage while we travelled the new, fast stretch of the Loch Lomond road.

"Yeah," she said slowly. "Mm-hmm." She put the sheaf of papers down, switched off the torch, looked at me, then lit the J. "So this is Rory's idea of what happened just before Fergus and Fiona crashed?"

"Yeah."

"And is this Rory indicating your Aunt Fiona fucked my Uncle Lachy?" she sounded almost amused.

"Right," I said. I glanced at her.

"Kind of fanciful, isn't it?" she said. "Jeez, he was hardly ever here, and they didn't really move in the same social circles."

"Damn," I breathed. "Maybe you should have read the other two bits first."

"Hmm." Ashley drew smoke in, handed the J to me.

I took a small toke. "Yuk; what's this?"

"Herbal mixture," Ash said. "No point giving up fags and then smoking tobacco in Js."

"Hmm," I said, handing the number back.

"So what are you saying, Prentice? Did I miss something?.

Maybe." I shook my head, letting the car slow as we approached Tarbet. "Or maybe I'm reading too much into it… want to read the other two bits?

Ash sighed, accepted the J back and switched the torch back on.

We passed Tarbet, accelerating over the shallow neck of land to Arrochar, pottered through the village at less than forty, then gathered speed again as we curved round the head of Loch Long, passing the place where I'd retrieved the airmail package from the footwell a couple of hours earlier.

"Yeah, but what did Fergus tell Rory?" Ash said, finishing that part.

"Read the next bit," I said. I waved my hand when Ash offered me the joint.

The road started to climb along the dark shoulder of the hillside towards the Rest-and-be-Thankful, leaving the old road still down in the floor of the glen. I kept a careful look out for Mad Stags From Hell crashing across the road, but none appeared.

"Woof," Ash said, closing the last page, "Horny stuff towards the end there." She switched the torch off again. "You think that last bit is what Fergus told Rory in the bothy, if it really happened?"

"Yeah," I said. "There's a diary entry to back it up, and there is a way through the castle's attic from the observatory to the master bedroom, and a loft door. Helen mentioned it just today."

"But Prentice!" Ash laughed, coughing. "All you've got is Rory's… written word for it!"

"It's all circumstantial, I know. Although mum does remember the party at Hamish and Tone's, and Lachy did help Fiona take Fergus home."

"Wow," Ash said, tartly.

"So anyway, what's happened is: Fergus has spilled these beans to Rory, who's spent years trying to come up with some creative ideas for his big project and failed dismally, then decided Just Use It; use the one spectacular piece of real-life drama only he and Fergus know about; he's written this sort of diary piece about the time they were in the bothy together; another, more fictionalised bit about what Fergus actually saw; and then a third passage that… well, that's the point." I glanced over at her. "I was hoping you might see the same thing I did in that last bit, the bit in the car. I think that was what Rory was writing just before he borrowed the bike and went to see Fergus, because of what he had started to suspect, when he was writing that."

"Went to see Fergus?"

"Yes." I looked over at her. "And Fergus killed him."

"What? And Fergus killed him?" Ash said, voice high. "Why, Prentice?" She opened the window a crack and threw the roach out.

"I'll come to that," I said, holding up one finger. We were passing Loch Restil now; I was still watching out for stags.

Ashley shook her head. "Prentice, have you been reading crime novels instead of your history books?"

I gave a small laugh. "No. The worst crimes are always in the history books, anyway."

Ash undid her hair, reached into her bag and started to brush her hair with a long-tooth comb. "Hmm," she said. "Okay. So keep going."

"Right," I said. "That guy Paxton-Marr. He'd been sending dad those match-book covers… I mean match-book covers, right?"

"Yeah, so?"

"So he knows Fergus; Fergus was getting the guy to send them, making dad think Rory was still alive, farting around all over the world. Why should Fergus want to do that?"

"I don't know, but what's so special about match-book covers?"

I looked over for a moment; her face was pale in the lights of an on-coming car. "That bit in the bothy," I told her. "Rory tells Fergus he accidentally set fire to a barn on the estate when he was a kid. I think the only other person Rory'd ever told about that was dad, who thought that nobody else knew. So when these match-book covers came from all over the world, he thought it was a secret sign from Rory."

Ashley was silent for a while, then sighed. "What fertile imaginations you have in your family."

"Yeah," I said. "I'm afraid so."

We rounded the long left-hander into Glen Kinglas, where Verity had almost lost the back-end of the Beemer a year earlier. The long straight disappeared into the darkness. A few tiny red sparks in the distance were tail lights. I had another shivery feeling of déjà vu.

Ashley tapped her fingers on the dashboard, then ran them through her hair. After a while she said, "And what did Rory suspect?"

"Murder. His sister's murder."

Ash took her time before answering. "You think Fergus killed your Aunt Fiona as well?"

I nodded. "You guessed it."

"She was already dead when they had the crash?"

"Hmm, I hadn't thought of that," I admitted. I came off the power. I checked the mirror; there was nothing following us, and no headlights in front. "No, I believe Rory got it right in that bit he wrote, and she was alive when they crashed; I was thinking of something else."

"What?" Ash said.

braked smoothly as though we were approaching a sharp corner, not on a long straight. From the corner of my eye, I could see Ash looking at me. I changed down to second gear, let the engine brake the car. I reached over and hit the little red release button on Ashley's seat belt, then I slammed the brakes on. The Golf skidded briefly along the road on locked wheels. I heard Ashley shout something. Her hands went out in front of her. She shot forward, harder than I'd intended and went "Oof!" against the dashboard, blonde hair flying. Her head hit the screen.

The car juddered to a stop.

I stared in horror.

Ash sat rubbing her forehead. She glared at me. She was holding her chest just underneath her breasts with her other hand. She glared at me. "What the fucking hell was that for, Prentice?"

"Oh shit," I said, hand to mouth. "Oh God, are you all right?" I checked the mirror, put both hands to my mouth. "I didn't mean to actually hurt you."

"Well you actually did, you idiot." She looked down at her seat-belt anchorage, then at the buckle. One side of the belt was still wrapped round her. I sat staring at her, my back against the driver's door, my heart pounding. Ashley patted her forehead, studied her fingers, then scowled at me and sat back in her seat, re-fixing her seatbelt. She waggled her shoulders, sticking her chest out a little and grimacing through the screen at the dark grey length of road exposed to the headlights. "You complete fool, Prentice; I may never dance the rhumba again." She looked at me, then pointed forwards. "Drive."