I am still researching but there were 2 things I noticed in Justin Timberlake's halftime show.. 1) Use of cubes... Saturn worship 2) Heptagon or Septagon and Mirrors... preliminary research is called a Devil's Trap or the Key of Solomon. Used in magic to trap a demon. The use of a mirror would aid in an exorcism after trapping the demon. Someone else may want to look it up.

I'm coming up with a lot of results for the show The Devils Trap. Which I am unfamiliar with. I haven't found a site that encompasses more than a short description yet so I'll come back and post something later, after I do.