Magical researcher looking into constructs and the undead. He owned an estate north of Eastel where he was looking into all sorts of delightful things. His work attracted the attention of a doppleganger, who studied him and stalked him, driving Stone paranoid and insane.
The doppleganger killed Stone, but not before Stone activated a golem and several traps throughout his house. The doppleganger hired the party to go through the house and clean out the elementals, undead, and golem so he could "get back to his research".
The undead turned out to be a zombie beholder and the golem was left active after the doppleganger revealed himself.
Stone Arken is deceased. The doppleganger is at large, whereabouts unknown. The estate itself might be the new home of the Society of Animal Rarities.