Can you recount the story from the Satcharitra about the serpent in the barn and how the people, especially Nevasakar, reacted?

Certainly. Chapter 35 describes an incident where a fearsome serpent entered a barn, causing widespread panic among everyone present. People were terrified and unsure how to resolve the dangerous situation, even hesitating to go outside. Amidst this fear, a man named Nevasakar fearlessly brought a vessel full of milk and placed it before the serpent. After drinking the milk, the serpent mysteriously vanished, eluding everyone's eyes. While this brought relief to most, Nevasakar was left disappointed, as he had wished to witness the serpent leaving just as he had seen it arrive.