Tom Sawyer decides to swim back to St. Petersburg en goes to his house. He sees and hears how aunt Polly, Sid and Mrs. Harper are grieving the loss of their children. Tom hears about the special service in church, that is dedicated to the three missing boys. Tom swims back to Jackson's Island and tells his friends the news. The boys decide to go back home and surprise everyone during the special service (thetvdb.com)