Government officials, meanwhile, are struggling to find out exactly how Joseph might commit the crime. Even though the suspect is in custody, and a psychic probe reveals he doesn't intend to commit any crime, the probability of success, as given by Multivac, continues to rise. As the government begins to wonder if Multivac might be mistaken, the police holding the family ask if they are to continue allowing the other members to come and go as they please. The government soon realizes that the murderer might not be Joseph, but his son; as a minor, the boy's information is part of his father's forms, so Multivac treats the two as one person. Ben is found and arrested just as he is about to follow the final instruction: closing a certain lever, which would result in burning enough circuits in Multivac to render it inoperable for months. It is revealed that Multivac was the intended murder victim and that it supplied Ben with instructions on how to do this.