Did the group manage to save everyone from a dramatic hostage situation?
That was revealed on Criminal Minds Season 13 Episode 19 when the team made their way to D.C. when they heard about what went on.
Matt Simmons revealed to the team that his wife worked in the building, and they had to treat the whole operation delicately.
But who was the person taking everyone hostage? What was the motive surrounding all of it?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.