'Criminal Minds:' Top 10 moments from 'True North'

7. Sun dials

After figuring out that the victims they found were all facing North, Luke gets an idea to try a demonstration using bits of paper and a stick. He shows Stephen and JJ that the victims were placed in locations relating to a sun dial. They realize that based on the position of each victims, the unsub is counting down from 4 to 1.

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