Don takes under his wing the son of a murdered executive as the team and Charlie try to narrow down who's responsible out of a pool of six thousand or more.
When a death results from an anti-terrorism exercise Don and his team are called in, but they end up butting heads with the leader of the unit who refuses to halt further training exercises. Back at home, Alan has volunteered the house for the wedding of a girl both Charlie and Don had a crush on in high school.
A psychic helps to find a burial site of numerous illegal immigrants just across the California-Mexico border. Charlie and he battle to see who will come up with the location of another female migrant before she joins the other victims in the morgue.
After an Iraqi woman - in the US to film an interview on atrocities against women back home - is murdered, clues lead to an American military suspect and the team must determine their truth before another killing occurs.
An ATF agent is found in her home, an apparent victim of suicide. Don, having been involved with her, asks Charlie to run algorithms to determine if she was likely suicidal, or she was murdered.