In a small Western Massachusetts town, Dr. Carolyn Ryan and her sculptor husband Ben live with their two children Jacob and Judith. Their world is shattered when Sheriff Fran Conklin tells them that Martha Taverner has been killed and witnesses saw Jacob with her just before she died. When he asks to speak with Jacob, the family realizes that he's not in his room as they thought. Conklin asks to look at Jacob's car, but Ben refuses. When Conklin asks Judith where Jacob is, Ben demands the sheriff get a warrant.