|"I show not your face but your heart's desire."|
At least some content in this article is derived from information featured in Fantastic Beasts: Cases from the Wizarding World. Spoilers will be present within the article.
Muggle creature hunter Laura Thorn kept a clipboard in which she made diving calculations after hearing that the landlord of the Siren's Rest, in Wales, had been attacked by some sort of creature in the nearby lake.
Ministry of Magic investigators Mathilda Grimblehawk and her partner later found this clipboard in a lakeside grotto and, after magically clearing the water damage, read it just to realise that the Muggle probably planned to dive into the lake, at the risk of being attacked by the creature.