The Identification Bureau's dirty white Transit Van was abandoned in the lay-by, just behind a marked patrol car, so Logan had to park their rusty Vauxhall half on the grass verge and hope no one would run into the back of it. DC Rennie spluttered his way out of the back seat, wiping ash from his hair and face – Steel had spent the whole ten-mile journey out from Aberdeen with the passenger window down, the ash from her cigarette spiralling through the car's interior like a mini snowstorm – which was why Logan had elected to drive. He waited until the inspector had shooed Rennie up the path to go find the crime scene, before asking her if this meant he wasn't swapping over onto the night shift.

'Hmm?' Steel looked at him, distracted as she picked three individually wrapped white SOC over suits from a box in the boot of the car. 'No,' she said at last. 'Sorry, but I still need you to go looking for witnesses. We both know Jamie's alibi's a crock of shite. We just have to prove it.'

'Then how come you dragged me out to this?' It came out slightly whiny, but Logan was past caring.

Steel sighed. 'What am I supposed to do? You know why they call it the Screw-Up Squad? The Pish Patrol? The Fuck Up Factory? 'Cos every bastard that can't find their backside with both hands gets dumped in it. Keep the useless tossers out of the way, where they can't do any damage… We only got this call 'cos everyone half-decent was busy.' She smiled, sadly. 'It's a body in a suitcase, Logan, who else am I going to trust to take with me? That bunch of fuckwits I've been lumbered with?' She handed him the protective gear. 'Never mind, you don't have to do a whole shift tonight. Knock off about two. Look on it as a bonus.' Then she patted him on the arm and stomped off up the rutted track into the forest, leaving him to swear quietly in her wake.

They found DC Rennie standing at the side of the track, about half a mile from the main road. There were broken branches and scuffmarks in the carpet of yellow-brown pine needles. 'In there,' he said pointing, obviously proud of himself. Logan gave him the protective gear to carry. As the inspector said: delegation. It was cooler in the woods, the sunlight dappling the ground at their feet, filtered through the canopy of sharp green needles.

It should have been dead quiet beneath the spiky branches, but it wasn't. They could hear a barrage of swearing intermingled with helpful suggestions coming from up ahead. And not long after that, the smell started. It was a rancid, stomach clenching stench. Gagging slightly, Logan tried breathing through his mouth. The taste was slightly better than the smell, but not by much.

They broke through into a small clearing, where an old pine tree had fallen like a massive wooden domino, taking a handful of smaller trees with it. Now it lay on its side, pointing back towards the track, its roots standing upright like a filthy sunburst, blocking the main attraction from view.

The IB team were here, trying to manhandle a scene-of crime tent over the bottom part of the tree, three of them heaving away at the uncooperative blue material, while another two struggled to get the remainder over the tree's roots. Standing on the other side of the clearing was a middle aged woman dressed for the outdoors, an excitable Jack Russell terrier on a lead bouncing up and down at her feet.

A young uniformed constable snapped to attention as DI Steel approached.

'It's OK,' said Steel digging out another cigarette, 'you don't have to curtsey.'

Grinning, the constable told them how Mrs Hendry had guided him to the spot and he'd called for the Identification Bureau as soon as he'd seen the case. A duty doctor and pathologist were on their way. As was the Procurator Fiscal.

'Good boy,' said Steel when he'd finished. 'If I was DI Insch, you'd get a sweetie.' Instead she offered him a fag, much to his horror. Surely it wasn't right to smoke at a crime scene. What about contamination? 'Aye, you're probably right,' said Steel, puffing away. They got Mrs Hendry to go through her version of events again. No she hadn't touched anything; well you weren't supposed to, were you? Not when you found a dead body in a suitcase.

Steel waited until Mrs Hendry and her little monster-dog were escorted from the premises before slouching into action.

'Right.' She grabbed a boiler suit from Rennie, leaning on Logan for support as she tucked her trousers into her socks and clambered into it. Once they were all suited up, only their faces showing, she stomped over to where the IB team had almost managed to get the tent erected. The air was thick with flies. 'You lot going to be all bloody day?' she demanded.

A thin man with a dirty-grey moustache scowled at her.

'This isn't easy, you know!'

'Blah, blah, blah. You opened the suitcase yet?' Not bloody likely was the loud reply. You never knew which pathologist you were going to get these days, and if it was that MacAlister woman you'd get your testicles in a jar for messing up her crime scene. So that suitcase was going to stay locked until she, or the duty doctor, got here. Steel stared at the red fabric case. 'Just like Christmas Eve, isn't it?' she said to Logan.

'The present's right there under the tree, you know what's in it, but you're not allowed to open it till Santa's been. Don't suppose a small peek would hurt though, would it…' She made for the tent's open door, but Dirty Moustache stopped her on the threshold.

'No,' he told her. 'Not till the pathologist gets here!'

'Oh come on, it's my crime scene! How the hell do you expect me to catch the bastard if you won't let me have a poke about?'

'You can poke about all you like when the pathologist says so. Until then this area will remain sealed. And anyway,' he pointed at the cigarette bobbing away in the corner of the inspector's mouth, 'there's no way you're getting in there with that!'

'Oh for God's sake…' And with that DI Steel scuffed off to smoke her fag and sulk in peace. Ten minutes, one and a half cigarettes, later there was a cry of 'Hello?' and the crunch and snap of someone pushing their way through the branches.

It was the new deputy PF, already done up in her sceneof-crime boiler suit, complete with matching blue shoe covers, even though the rest of her party was still in their regular clothes. The real PF followed her, deep in conversation with Dr Isobel MacAlister – the Ice Queen cometh – while Doc Wilson stomped along at the rear of the group, not talking to anyone and scowling at Isobel's back.

The PF gave them a grim smile, asked to be brought up to speed, then suited up and disappeared into the SOC tent, taking Isobel and a reluctant Doc Wilson with her, leaving her deputy to fidget at the entrance to the stinking blue plastic grotto as Dirty Moustache refused to let her into the crime scene. 'You've trailed every bit of grit and dirt and God knows what else in from wherever you got changed!' he said, pointing at her protective suit and booties. 'You'll have to get on a new set.' Blushing furiously she stripped off, revealing a sombre black suit and canary-yellow blouse. The outfit, combined with Rachael's beetroot face and curly red hair, made her look like an angry bee. DI Steel left her to it, dragging Logan with her into the crime scene.

There were hundreds of flies in the SOC tent, buzzing and swooping in the foetid air, making Logan's skin crawl. The sunlight, stronger in the clearing than it had been in the forest proper, made the plastic sheeting glow, tainting everything a sickly blue. Looking a bit like Smurfs in their white over suits, the IB technicians kept a respectful distance from Isobel. Just in case. The video operator went in for a couple of long panning shots before settling down behind her left shoulder so that he could get a good view of the case's contents when it was opened. The photographer flashed away, the sudden clack and whine making everything jump into full colour, before fading back to shades of blue. There was a rustle of plastic and Rachael, dressed in a brand-new set of coveralls, poked her head into the stench then joined Logan and Steel at the back of the tent, looking on as Isobel examined the case.