NCIS: Los Angeles - Cyber Threat

Someone hacks into the Department Of Defence and the attack is traced to a man who is subsequently kidnapped.  The team go in under cover to protect the family, the wife and son of the kidnap victim and it is while they are there that they discover the actual hacker is none other than the boy.
It appears the Chinese have kidnapped the father in the hope of using him for further hacking attacks without knowing he wasn't even responsible.  The team have to rescue the father from the Chinese.
Meanwhile Callen is still having to deal with Hunter and needing to speak to the convalescing Hetty to find out the truth about his past.  What will he do if she tells him everything?
Another good episode.