In the Mystery Of Wistimere, the Vermin rode toward Wistimere to fulfill their first solo contract without Hydrox's oversight. Vesper quickly saw that something beneath the surface did not add up after sparing a Troll in the forest and delving into the town's relations. When the troll they once spared returned as Undead, she fought to keep Valant Vainglory alive even as Lola determined the nature of his Zombie Rot. They pushed for proof after an encounter with the Zombie form of Qudoris Vexalim and her sister Quira Vexalim, Vesper searched the Marvelous Menagerie, and uncovered ledgers, missing Beasts, and evidence of cages moved to the Manor LaPall. They found he was obsessed with the Weretiger Luana Yinshera, and their suspicion culminated in an attempt to find evidence in his Manor. Vesper helped orchestrate the break-in, played her part in luring guards to their deaths, and moved quietly through the manor’s upper rooms, stealing what she could, including a Kinetic Bowstring that would later prove vital.
In the caverns below, she faced the consequences of every suspicion confirmed: butchered elves and caged undead confirming Perceval LaPall's Research Conclusions. When Perceval LaPall unleashed his alchemy and forced Luana's transformation with the Waxing Moonstone, Vesper held her ground amid lightning and chaos, watching Valori fall and rise into a Lycanthrope. Her arrow struck LaPall as he fled, and she felled the undead Valant he released in desperation.
By the end, Vesper had seen her mercy toward the troll come full circle, and her twin altered by Curse and a permanent heart injury. LaPall's confession and corpse were delivered as proof, preventing war between town and forest, and the Vermin officially gained Luana as a new party member.