Derek and Meredith try to be discreet after spending the night together at her house. George suspects an anaesthesiologist is drinking while at work.
The team are called to shut down a campus in order to create a profile for a killer, but they have doubts about the main suspect after taking them into custody.
A deceased soldier is suspected of murdering a young girl after her body is found in his belongings. However, Gibbs believes he is innocent and sets out to prove it.
As he unravels the motivation behind the killing of a wedding guest, Jane gets to scrutinise Sheriff McAllister, who is one of the men he believes may be Red John.
Ray returns from New York after failing to find kidnap victim Madeline Briggs. When a weathercaster who was moonlighting as a prostitute is murdered, the case throws up a clue that could finally lead him to the missing young girl.