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In "," the Behavioral Analysis Unit (BAU) travels to Silicon Valley to investigate a workplace shooting. The unique element of this case is that the perpetrator used a state-of-the-art drone to carry out the attack, making it difficult for witnesses to provide a consistent description of a physical shooter. As the investigation unfolds, the team discovers:

This episode was originally intended to be the third episode of the season. However, due to the mass shooting in Las Vegas in October 2017, CBS swapped it with the episode "" out of sensitivity to the workplace shooting theme. Killer App | Criminal Minds Wiki | Fandom

The victims were specific coders at two different video gaming companies who shared a brief period of unemployment.

A secretive military contractor named Peakstone is involved in the conspiracy and attempts to protect its organizational secrets at any cost. Episode Details Description Title " Killer App " Original Air Date October 18, 2017 Director Alec Smight Writer Stephanie SenGupta Plot Inspiration