“Hang on,” Richie said. “You said: still room for an outsider. And that thing with the attic hatch: you said maybe to catch the guy who made the holes. What … ?”

I sighed. “Richie. When I said outsider, I was talking about the guy who lent Patrick Spain gambling money. The guy Jenny was shagging on the side. Fiona Rafferty. I wasn’t talking about Freddy bloody Krueger. Do you see the difference?”

“Yeah,” Richie said. His voice was even, but the set of his jaw said he was starting to get annoyed. “I do.”

“I know this case looks—what’s the word you used?—creepy. I know it’s the kind of thing that gets the imagination working overtime. That’s all the more reason to keep your feet on the ground. The most likely solution here is still what it was when we were driving up: your bog-standard murder-suicide.”

“That,” Richie said, pointing at the hole above the bed, “that isn’t bog-standard. Just for starters.”

“How do you know? Maybe all the free time was getting on Patrick Spain’s nerves and he decided to go in for some kind of home improvement, or maybe there’s something dicky in the electrics, just like you suggested, and he tried to fix it himself instead of paying an electrician—that could explain why the alarm wasn’t on, too. Maybe the Spains had a rat after all, caught it, and left the trap up in case its mates came sniffing around. Maybe those holes get bigger every time a car goes past the house, and they wanted video to play in court when they sue the builders. For all we know, everything odd in this whole case comes down to shoddy building.”

“Is that what you think? Seriously, like?”

I said, “What I think, Richie my friend, is that imagination is a dangerous thing. Rule Number Six, or whatever we’re on now: stick with the nice boring solution that requires the least imagination, and you’ll do fine.”

And I went back to digging through Jenny Spain’s T-shirts. I recognized some of the labels: she had the same tastes as my ex. After a minute Richie shook his head, spun the fifty-cent piece onto the top of the chest and started folding Patrick’s khakis. We left each other alone for a while.

The secret I had been waiting for was at the back of Jenny’s bottom drawer, and it was a lump tucked into the sleeve of a pink cashmere cardigan. When I shook the sleeve, something skittered across the thick carpet: something small and hard, folded tightly in a piece of tissue paper.

“Richie,” I said, but he had already put down a jumper and come to look.

It was a round pin badge, the cheapo metal kind you can buy at street stalls if you get the urge to wear a hash leaf or a band name. The paint on this one was worn patchy, but it had started out pale blue; to one side there was a smiling yellow sun, to the other something white that could have been a hot-air balloon or maybe a kite. In the middle it said, in bubbly yellow letters, I GO TO JOJO’S!