The secret jailing of an Australian spy

A former intelligence officer in Canberra, known as Witness J, was charged, sentenced, and jailed in complete secrecy in 2018.
It was only after he brought his own legal complaint, and journalists noticed some security guards in the courthouse, that anything about his case was made public. 
Now, as fragments of the proceedings against the man known as Alan Johns filter out, we’re learning what happens when our spy agencies go to court.
Today, Chief Political Correspondent at The Saturday Paper, Karen Middleton, on the case of Alan Johns.
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Guest: chief political correspondent at The Saturday Paper, Karen Middleton