‘Somewhere between St Andrews and Leven. Oh wait.’ Clare sat thinking. ‘Zac could have gone back to Leven with Abe and got out of the car before they reached the speed camera.’

Chris smiled. ‘Nope. I checked. Zac’s flat is further on from the camera. He’d have still been in the car when Abe picked up the ticket.’

‘So where did he drop Zac?’

‘You know what I’m thinking?’ Chris said.

Clare nodded. ‘Lamond Lodge is on the outskirts of St Andrews. Abe could have dropped Zac there and left him to break into the Lodge.’ She squinted again at the speed camera photo. ‘One fifteen,’ she said. ‘How far’s Leven from here, Chris?’

‘Half an hour in a car. Probably a bit less at that time of night.’

‘Okay, Abe left St Andrews about quarter to one. Our security guard finished at Lamond Lodge around two. Zac wouldn’t have had to hang about for long after nicking the car. Say Abe dropped him at the gate at quarter to one. He makes his way up towards the fencing, probably sees the cameras, and skirts round the side waiting for an opportunity to climb the fence.’ Clare picked up the cash machine photo again. ‘It’s too much of a coincidence, Zac being in St Andrews the night before Russell Fox was shot.’

‘Still doesn’t help us if he won’t say anything,’ Chris pointed out.

‘No,’ Clare admitted, ‘but that might.’ She jabbed the photo of Zac at the cash machine. ‘The jacket. He’s sitting in our interview room wearing the same one he wore on Friday night.’

‘So?’

‘So, I’m gonna have that jacket off him right now. If he was wearing it when he shot Russell Fox it’ll be peppered with gunshot residue.’ She put down the photos. ‘I want you to run it across to the lab in Dundee. Top priority. We’ll soon know if Zac Buchanan fired the gun.’

Raymond Curtice, Clare’s contact at SOCO, agreed to rush through the test for gunshot residue as a favour. ‘That is one enormous drink you owe me,’ he told her, and she promised to oblige.

With Zac languishing in the interview room, pending the results, Clare sought out Janey. ‘Any luck checking out Gaby and Luke?’

Janey nodded. ‘I think so. It’s hard to be absolutely sure. But they dined in the hotel restaurant on Friday night and judging by their bill they had aperitifs, then a bottle of wine and whiskies to follow. And they were both up for breakfast too – just after eight.’

Clare smiled. ‘Not impossible then, but unlikely.’

‘I’d say so. Sorry.’

‘Ach, it’s fine. I didn’t really fancy them for it anyway.’

‘Bill was saying you’ve got the lad Buchanan’s jacket away to check for gunshot residue.’