Did Linda Barnes prove to be a solid addition to the BAU?
That was revealed on Criminal Minds Season 13 Episode 15 when the FBI's assistant director of national security appeared to help them out with with a quadruple homicide.
The harrowing murder happened to a group of roommates in St. Louis.
With the team struggling to find a motive, they struggled to conclude whether it was a premeditated attack.
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Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.