
jadony |

If the PCs choose to go to Voz after hearing that Calmont was the arsonist and that he worked for the bookseller, they should find her there, frankly. She isn't supposed to have left town yet, and at that point really has no reason to. If the PCs question her, she doesn't even really have to lie: she'll say she fired Calmont, he stole a magical scroll from her on the way out, she hadn't yet decided if she wanted to go to the authorities about the theft or just wash her hands of him entirely. She can bad-mouth him all she wants, and since most of what she is saying is entirely accurate, she ought to probably get a bonus to her Deception DC for the few bits she's leaving out.
Even a successful roll is more likely to indicate that she's faking her outrage over the arson than anything else; the truth is, she's a cold fish and is far more upset that he betrayed her and stole from her than she is about how he nearly killed a couple dozen people in a fire. It won't even likely have occurred to her at that point that Calmont's defection is a threat to her; only later will she probably conclude that there's just enough danger to her plans if he manages to get himself caught that she might want to consider fabricating an excuse to head out of town.
Agreed that this would be the way to play it retroactively, although in the moment of trying to run the adventure on a skim with little prep as it was written, it didn't occur to me that this would be the case because I simply flipped to the "for more information about Voz's bookshop, see page X" as indicated in the description of the bookshop in the toolkit. Typically these sorts of issues wouldn't be a problem for me (like to digest an adventure with at least 1-2 full read throughs before I play) but in my haste to give it a spin, figured the book would guide me right.