First part of a three part season opener crossover event. Part two is Season 3, Episode 1 of FBI--Most Wanted.
Executive producer Dick Wolf said certain elements of this episode will remind the audience of Jeffrey Epstein & other people who have been in the papers over the past year (2021), such as Ghislaine Maxwell.
FPS is short for Federal Protective Service; their job is to guard Federal Government Buildings.
The episode title, derives from the expression "All that glitter's is not gold."
Both Oded Fehr(Zankou) and Julian McMahon( Belthazor/Cole Turner/The Source) played demons on Charmed (1998)