Overview: Secrets, spies and hidden trials. How do we balance national security with your right to know? Joining Hamish Macdonald to discuss this and more are: Dennis Richardson, Former Director-General of ASIO; Nick Xenophon, Lawyer and former Senator; Annika Smethurst, News Corp journalist and AFP raid victim; Clinton Fernandes, National security analyst; and Jacinta Carroll, Counter-terrorism expert.