A look at the case

A look behind the scenes of the Judith Miller case:
New York Times reporter Judith Miller, who worked at the paper for 28 years, went to jail in 2005 for refusing to testify before a grand jury about the information leak about a CIA agent's identity. Miller refused to reveal her source who had knowledge about the leak case.
Here is what happened:
The CIA agent was Valerie Plame, whose husband openly criticized the administration and published an opinion piece in the New York Times. Plame's identity was revealed shortly after. Miller had received evidence about the leak investigation form an official source. Her source, I. Lewis "Scooter" Libby - former chief official of Vice President Dick Cheney - let Miller know after 85 days in jail that she could testify.
The case received national and international attention, and heated the debate about ethics in journalism.

Sources: CNN