Near the end of season one Hardy admitted the truth about what happened on his prior case, the one that ruined his health and let a killer go free. He didn't lose the evidence, his wife did (also a DS). To protect her, he took the blame. Now, he said to the reporters to go ahead and publish the story, just leave out his former wife's name. I have to assume they did.

So why then no mention of it? I am at ep 4 of season 2 and at least expected the mother of one of the dead girls to contact him or something...