Noah dipped his head, "Sorry, didn't mean to scare anyone," it was a common enough occurrence in their Department - someone so completely enthralled in their work that they didn't notice someone else, so he was used to apologizing for it several times a day. He wasn't downtrodden or anything - they were just an easily spookable lot, for the most part. Noah assumed that was because when you know that all the scary stories are real, well, there's no unknowing that, right?
"Oh, Vane, hi there." He'd just come back from walking in the rain - it was something he did to clear his head when pondering a particularly difficult puzzle. Today it was to do with temporal lobe function abd certain dark magic... AKA the magical formation of false visual memories. To make one - force someone - remember things that didn't happen.
They'd had a case of it out in the highlands and the Aurors had referred the victim to the Unspeakables. Noah had of course immediatley deleted the Aurors' memories of the case, and then after extracting the memories of the victim, had deleted theirs and sent them on home to their mud and rock hut in the middle of nowhere none-the-wiser.
What he was looking at was different than a mere confundus or obliviate - the latter being what'd he'd used on the Aurors and the victim, as Unspeakables were allowed to do. "What've you got there?" He asked her, coming near - but not too near, as he honestly wasn't sure Cassandra's opinions on personal space, even having worked together for a few years (Unspeakables in general, or at least in Noah's experience, were a solitary bunch) - to look into the cauldron. "Oh! Is that Amortentia? Nice batch there, very good viscosity." He wondered where she had gotten such a high-level, high-difficulty potion.