Special Agent in Charge Frank Zwick is the FBI agent who takes charge of the kidnapping investigation. Zwick wants to charge in and arrest the kidnappers, but Will is afraid this method will end in his daughter's death. Will refuses to do everything Zwick suggests, leaving Zwick a bystander in the ordeal until Will manages to get custody of his daughter again. Zwick then assists Will, helping transport him and his family to the hospital in an FBI helicopter.