Snakes Underfoot

From publisher blurb: When an unsuspecting merchant releases an evil serpentine spirit, her warehouse becomes home to a growing snake cult. An ancient being long imprisoned, now that she is free Vexessthalla draws those with evil in their hearts to her. Her worshipers feed her, with both bodies and praise, and her power grows. What are her plans now that she has been freed onto the world again? Can the players stop her before she is strong enough to carry them out?