"You know your whiskies then. That'll help," Robert said, looking up to see the sultry blonde as she made herself at home. He watched her choice carefully to be sure she didn't misstep. "And you picked one of the ones that actually were safe to drink. That's obviously an asset. The ones still in their labeled bottles? Not so much. Let me show you something." He wouldn't have let her drink from one of the tainted ones, but he doubted that, as foul as some of these were, she might well have picked up on the difference herself before she'd actually drank any anyway.
He plucked one of the tainted bottles from the credenza, the worst offender of the bunch, uncorked it, and sniffed it again. The potionsmaster in him was revolted, and the whiskey drinker in him didn't like it any better.
"Smell that--carefully," he cautioned her, handing the bottle to her. "An informant delivered those to us earlier tonight. Not safe for wizards to drink. I daresay that won't hurt muggles or squibs, but I hesitate to what it would do to wizards with unsuspecting palates who drank it who ended up with dangerous potions they did not need.
"The problem is that exceptionally complicated potions are finding their way into the wrong hands by being slipped into otherwise harmless muggle whiskies. The potions are difficult and expensive. They're not easily reproduced. Whoever is doing it apparently doesn't realize the fine art of potions because I've never found a potionsmaker that didn't have some fine, rather elusive differences in their styles of formulating a potion. After awhile, it becomes easier to identify the maker, somewhat akin to distinguishing one oil painting from an imitation. Its all in the fine details. And what I can tell you for certain is that the potionsmaker, in this case, has nothing to do with the potions ending up in these bottles.
"The potions involved are quite clearly mine," he said. "I know my own work like I know my own signature. They have to have been smuggled or taken from St. Mungos stores where those particular potions are under magical locks and protections. I don't market my work otherwise. They've either been slowly ripping off my stores, which is possible, albeit remotely. Or--there's someone who has put great effort into analyzing my potions to replicate them down to the individual signature sorts of things. I've never seen it done before, but that doesn't mean it couldn't be 'created' if someone truly had a mind to.
"I want to know who the hell has been taking my potions or is pretty effectively 'signing' my name to this codswallop, and I want it stopped. And--I need the damned things back, as many tainted bottles as we can get, before it starts to become toxic for witches and wizards who end up drinking powerful remedies they don't need. Are you up for it? Might mean a bit of travel. This lot showed up rather randomly, or so we thought, in Boston, of all places."