While thorough the forest I rove.

low. "I stole it, Dr Mason." "You did indeed. A remarkably small-time activity for a person who operates on the scale you do. It was just your bad luck, Mahler, that I happened to be looking directly at you when the theft of the sugar was mentioned back in the cabin. It was just your bad luck that when we had our coffee just now it was dark enough for me to have a swig from your cup without your knowledge: it was so stiff with sugar that I couldn't even drink the damn' stuff. Curious, isn't it, Mahler, that such a tiny thing as giving way to a momentary impulse of greed should ruin everything? But I believe it's always the way: the big slip-up never brings the big criminal to book, because he never makes any. If you'd left that sugar alone when you were smashing up the valves, I'd never have known. Incidentally, what did you do with the rest of the sugar? In your grip? Or just thrown away?" "You're making a very grave mistake, Dr Mason." Mahler's voice was steady now, and if it held any trace of worry or guilt I couldn't detect it. But I was now far beyond the naive stage of expecting to detect anything of the sort. "I didn't touch those valves. And, apart from the few handfuls I took, the sugar bag was quite intact when I left it." "Of course, of course." I waved the Beretta. "Back to the tractor, my friend, and let's have a look at this case of yours." "Don't be crazy," I snapped. "I have a gun, Mahler. Believe me, I won't hesitate to use it." "I believe you. I think you would be quite ruthless if the need arose. Oh, I don't doubt you're tough, Doctor, as well as being headstrong, impulsive and not very subtle, but because I rather respect your efficient and selfless handling of an awkward and ugly situation for which you were in no way responsible, I don't want to see you make a complete fool of yourself in public." He lifted his right hand towards the lapel of his coat. "Let me show you something." I jerked the Beretta forward, but the gesture was quite needless. As he pushed his hand under his topcoats, Mahler's gestures were smooth and unhurried, just as smooth and unhurried when he brought his hand out again and passed over to me a leather-covered card. I stepped back a few feet, flipped open the card and glanced down at it. That one glance was enoughor should have been enough. I'd seen these cards scores of times before, but I stared down at this one as if I'd never seen one in my life. This was a completely new factor, it knocked all my preconceived notions on the head, and I needed cheap canon digital camera slr time, time for reorient a tion, for understanding, for quelling the professional fear that came hard on the heels of that understanding. Then, slowly, I folded the card, pulled down my snow-mask, stepped close to Mahler and pulled his down also. In the harsh glare of the torch, his face was blue and white with the cold, and I could see the jutting of the jaw muscles as he clamped his teeth together to keep them from chattering uncontrollably. "Breathe out," I said. He did as I asked, and there was no mistaking it, none at all: the sweet acetone breath of the advanced and untreated diabetic can't possibly be confused with anything else. Wordlessly, I handed him back the card and thrust the automatic into my parka pocket. At last I said quietly: "How long have you had this, Mr Mahler?" "Thirty years." "A pretty advanced condition?" When it came to discussing a man's illness with him, I had little time for the professional reticence of many of my colleagues: besides, the average elderly diabetic had survived to that age simply because he was intelligent about the dietary and medical treatment of his trouble, and usually knew all about it. "My doctor would agree with you." I caught the smile on his face as he pushed his mask up, and there wasn't much humour in it. "So would I." "Twice daily injections?" "Twice," he nodded. "Before breakfast and in the evening." "But don't you carry a hypo and" "Normally," he interrupted. "But not this time. The Gander doctor gave me a jab and as I can usually carry on a few hours overdue without Ul effects I thought I'd wait until we got to London." He tapped his breast pocket. "This card's good anywhere." "Except on the Greenland ice-cap," I said bitterly. "But then I don't suppose you anticipated a stop-over here. What diet were you on?" "High protein, high starch." "Hence the sugar?" I looked down at the white crystals still clenched in my left mitten. "No." He shrugged. "But I know sugar used to be used for the treatment of coma. I thought maybe if I stuffed enough into myself.. . . Well, anyway, you