Reid successfully unlocks a pair of locked handcuffs with just a paper clip.
Tracy Belle, was played by, Elle Fanning. Sister of Dakota Fanning.
The Halloween films franchise features iconic killer Michael Myers, who is often referred to as "The Boogeyman" on and off-screen which is also the title of this episode, which aired on October 25, 2006. The original Halloween (1978) was released exactly 28 years earlier, on October 25, 1978 (also on a Wednesday).
Dr. Spencer Reid enunciates a famous Zen koan, about a tree; "If a tree falls in a forest and no one is around to hear it, does it make a sound?" when he says "Here's a question: if a tree falls in a forest does it make a sound if there is nobody there to hear it?".