Lothar, in answer to your knocking (you'll probably have to bang the door a bit, or call out, to get the apothecary's attention), the door opens and you'll see the fellow you spoke with a few days ago looking shabby, overwrought and apparently having not slept. When he sees it is you, his eyes will widen. "Jesus Christ," he will murmur, "it is you. Come in, come in."
He will make room for you and Embla, and with some distraction and his insistence on one of you brewing some tea, he will sit down at a table in the apothecary's shop. There are twenty open books on the table, surrounding the tome that you brought him. He explains in a few words that he has been trying to translate the text ~ and that much of it horrifically coincides with the news he has been receiving through his business agent about what is going on around the town.
"You have woken something up," the apothecary, whose name is Gizur Aakur. "This book was written by a wizard named Hgiggle, somewhere near abouts the time of Beowulf. The humans were expanding through Sweden and Norway, pushing out the gnomes, the halflings and the stone giants and, apparently, a tribe called the Elba Pyarish; I've looked for a translation and find that it might mean 'evil frogs.' Does that sound like something you've encountered?"