Free The Wire in the Blood by Val McDermid

staying close to the walls as he moved silently down empty streets, his blank-soled bowling shoes making no sound. After a few minutes, he came to a narrow alley which led to the blind side of a small industrial estate he’d had his eye on for a while. It had originally been a ropeworks and consisted of a group of four turn-of-the-century brick buildings which had recently been converted to their present uses. An auto electrician’s sat next to an upholstery workshop, opposite a plumbing supplier and a bakery that made biscuits from a recipe allegedly as old as the York Mystery plays. He reckoned anyone who got away with charging such ridiculous prices for a poxy packet of gritty biscuits deserved to have their factory razed to the ground, but there wasn’t enough flammable material there for his needs.
    Tonight, the upholstery workshop was going to go up like a Roman candle.
    Later, he’d thrill to the sight of yellow and crimson flames thrusting their long spikes into the plumes of grey and brown smoke billowing up from the blazing cloth and the wooden floors and beams of the elderly building. But for now, he had to get inside.
    He’d made his preparations earlier that day, dropping a carrier bag into a rubbish bin by the side door of the workshop. Now he retrieved it and took out the sink plunger and the tube of superglue. He walked round the outside of the building until he was outside the toilet window, where he stuck the plunger to the window. He waited a few minutes to be certain the contact adhesive had hardened, then he gripped the plunger with both hands, braced himself and gave a sharp tug. The glass broke with a tiny tinkle, the fragments falling on the outside of the window, just as they would if it had exploded from the heat. He tapped the plunger smartly against the wall to shatter the circle of glass, leaving only a thin ring still glued to the rubber. That didn’t worry him; there would be no reason for any forensic expert to reconstruct the window and reveal a missing circle of glass at the heart of the shards. That done, he was inside within a few minutes. There was, he knew, no burglar alarm.
    He took out the torch and flipped it quickly on and off to check his position, then emerged into the corridor that led along the back of the main work space. At the end, he recalled, were a couple of large cardboard boxes of scrap material that local handicraft hobbyists bought for coppers. No reason for fire investigators to doubt it was a place where workers might hang out for a sly fag.
    It was a matter of moments to construct his incendiary device. First he opened up the cigarette lighter and rubbed the string with the wadding which he’d previously saturated with lighter fluid. Then he put the string at the centre of a bundle of half a dozen cigarettes held loosely together with an elastic band. He placed his incendiary so that the string fuse lay along the edge of the nearest cardboard box, then laid the oily handkerchief beside it with some crumpled newspaper. Finally, he lit the cigarettes. They would burn halfway down before the string ignited. That in its turn would take a little while to get the boxes of fabric smouldering. But by the time they’d caught hold, there wouldn’t be any stopping his fire. It was going to be some blaze.
    He’d been saving this one up, knowing it would be a beauty. Rewarding, in more ways than one.
    Betsy checked her watch. Ten minutes more, then she would break up Suzy Joseph’s junket with a fictitious appointment for Micky. If Jacko wanted to carry on charming, that was up to him. She suspected he’d rather seize the opportunity to escape. He’d have finished filming the latest Vance’s Visits the night before, so he’d be off on one of his charity stints at one of the specialist hospitals where he worked as a volunteer counsellor and support worker. He’d be gone by mid-afternoon, leaving her and Micky to a peaceful house and a weekend alone.
    ‘Between Jacko