 On Mrs. Olesen s invitation, the Rev. James Danforth comes to Walnut Grove to give residents his charismatic, fiery style of preaching. The hypnotic Danforth claims to have actually "witnessed" the Word of the Lord and can perform great miracles as a faith healer. He demonstrates his abilities during one of his revivals, restoring sight to a blind person and giving a crippled person the ability to walk. The people are awestruck and soon flock to his services. Rev. Alden, Dr. Baker and Charles have all seen Danforth at work and reject his ministry; in the aftermath, attendance at Rev. Alden s Sunday services declines sharply, while Dr. Baker s practice also suffers. Later, a farmer s son complains of abdominal pain and places complete trust in Danforth to have it healed. Dr. Baker is nearby and urges the farmer to have surgery instead, but Danforth seems to heal the boy. But later that night, the boy s appendix bursts (just as Dr. Baker feared was about to happen) and he dies; the farmer is forced to admit that God "chose" his son to come home. Meanwhile, Charles is on a delivery run to Sleepy Eye and learns that Danforth is holding a revival there. He confirms his initial suspicions that Danforth is a charlatan and - working with the farmer, the Olesens and Dr. Baker - hatches a plan to expose Danforth as a liar. It isn t long before Walnut Grove residents return to their old congregation and all is forgiven.