Omake: Collected Works of Gilderoy Lockhart
Break with a Banshee:
"It is relatively easy to communicate with a banshee, provided one is prepared to do so, and I was. A Quietus charm with a wide area of effect, combined with a pen and paper sufficed. And so it was that she wrote down the name of the one whose death she was foretelling: a witch by the name of Eudoxia Quipp. But there was still no clue as to the cause of death... or at least not from the banshee herself. For I had already concluded based on what I already knew of Eudoxia the form her demise would have taken..."
Gadding with Ghouls:
"A chameleon ghoul infestation can be difficult to root out, especially if the area where they have taken up residence is particularly large. To those unequipped to deal with one, as Mazirian Dabblewit was, they bring about an especial sort of horror, in which the victim fears that any inanimate object may be a ghoul in disguise, ready to kill them when their back is turned. The ghouls, of course, actively desire this paranoia in their prey, and take advantage of it in their hunting tactics. As it would take far too long to search for the ghouls myself, I set about devising various traps for them."
...
"The process by which a chameleon ghoul disguises themselves as an inanimate object is not an illusion, but a true alteration of their form, and my final trap was set up with this in mind. I had noticed that the ghouls' quick traversal of the manor was due to a small hole in the wall between Mazirian's workshop and bedroom, which they navigated by shrinking themselves, so over the hole on one side I placed a tea-strainer, with a spell rigged to shut it upon the first ghoul to pass under it. And within the day, this plan bore fruit..."
Holidays with Hags:
"Just as wizards often erroneously think of muggles as 'lesser', so too do hags look down upon humans, often using this attitude to justify their flesh-eating habits to their own victims. Alas, if they were more cooperative, we would have much to learn from their style of magic. This was the flimsy reasoning the three hags of Walsingham gave for their attacks once it became clear that I could easily overpower them, though I suspect they knew it would not be enough. And indeed, as with most other aggressive hags, I proceeded to trap them in ice, inducing torpor until a time came that they could be released without doing further harm. As for how I prevented muggles from discovering the trapped hags..."
Travels with Trolls:
"For some reason, possibly due to several ill-fated encounters in the past, wizardkind has decided that all trolls are utterly stupid. This is likely why Trollsign is so obscure among wizards: the idea that trolls would have a complex sign language seems absurd to them. But they do, and while I was not yet fluent in it, I knew enough to communicate with the troll I now know to be called One Whom A Mountain Could Not Crush, who soon told me what I had long suspected, the true reason why Quintus Grouse had hired me to kill him and his tribe, and the true problem that Quintus faced instead..."
Voyages with Vampires:
"Many of a vampire's weaknesses are psychosomatic in nature. This is because, at its core, vampirism is whatever the vampire believes it to be, likely having something to do with the Realm of Forms. This is, of course, rather difficult to verify, but it was something I had long suspected: vampires generally flee holy symbols, but only those they recognize as such. One unchanging aspect of their condition, however, is a restriction to a single source of food. Allimrac and I thus reached an agreement: I would lay a False Memory Charm upon her, creating the impression that she could only eat lettuce, rather than blood, and removing most of her weaknesses at the same time. Of course, the risk remained that she would realize her memory had been altered, so..."
Wanderings with Werewolves:
"Typically, a werewolf could manage their condition using Wolfsbane Potion, preventing the frenzy that would otherwise occur during their monthly transformation. Remote as we were, however, the werewolf would almost certainly be unfamiliar with that remedy. The burgomaster suggested that every night the villagers convene and execute whomever they suspect to be the werewolf. To this day, I do not know why he made this utterly absurd suggestion, but I now knew almost certainly that he was in fact the werewolf..."