Singer Skyler Wyatt reports a knife-wielding intruder in her home. The break-in seems to be connected to the hate mail she has been receiving for the last three months. Don begins to investigate and the body of a paparazzo is discovered overlooking Skyler's home. Don brings in his brother Charlie to analyze the hand-written hate mail and to try to determine where the strange photographs found on the dead body were taken. As the investigation proceeds the brothers are drawn further into the murky world of the paparazzi and celebrity stalking!
The raid on a small time forgers home reveals a secret code book. Don takes the code book to his brother Charlie who tells him that the book hides secrets of a skilled and highly trained assassin somewhere in the country. Interrogation of he forger reveals the name of the intended target, Gabriel Ruiz, the last remaining member of a powerful political family in Colombia. So the hunt begins to catch the assassin before he completes his mission!
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.
Data from a meth lab explosion reveals a photograph that triggers memories for Charlie and put him at loggerheads with Don who's focused on tracking down the drug dealer who set off the explosion that killed one of his agents.
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.