Based in Quantico, Virginia, the Behavioral Analysis Unit (BAU) is a subsection of the FBI. Called in by local police departments to assist in solving crimes of a serial and/or extremely violent nature where the perpetrator is unknown (referred to by the Unit as the unknown subject or unsub for short), the BAU uses the controversial scientific art of profiling to track and apprehend the unsub. Profiling entails coming up with basic characteristics of the unsub and the victims (referred to as the victimology), using evidence from the case and matching that information to historic precedents and psychological analyses as a means to solve the case. Because of the nature of the work conducted by the BAU - the work being time consuming and psychologically demanding - its members are fiercely loyal to the Unit and to its other members. Also because of the work's overall demanding nature, not many members of the BAU have been able to maintain a happy or stable family life.
For these FBI agents, danger lurks inside.
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Did You Know?
Before joining the BAU, Derek Morgan was a highly decorated member of the Chicago Police Department's bomb squad, and is an expert at defusing explosives. See more
The black SUVs used by the team frequently have US Government "G" plates. However, the plates are usually incorrect for the type of vehicle they are on. Plates with prefixes of G12 and G14 have been seen. G12 is a compact sedan and G14 indicates a large sedan, and would be incorrect for use on an SUV. The correct plate prefixes would either be G41 for a 2 wheel drive or G61 for a 4 wheel drive 1/2 ton vehicle. See more
[Aaron's brother Sean emerges angrily from Aaron's office. Garcia, Elle, and J.J. are watching
THAT'S Aaron Hotch's brother?
Jennifer "JJ" Jareau
Sorry, I just don't see it.
Aaron "Hotch" Hotchner
[Aaron appears at the door of his office
Sean, all I'm saying is, you're 25 years old. It's normal for people in your position to seek alternatives...
You know what? DON'T profile me Aaron!
[Sean continues to storm away
Jennifer "JJ" Jareau
Now, I can see it...