Generally a series that lasts 10 years could be excused for becoming a bit stale and formulaic. But this episode proves that Criminal Minds doesn't quite fall into that category. The level of intricacy and emotional power is maintained throughout the episode. Even though the plot structure follows the usual patterns of unthinkable crime, our agents trying to profile him while searching for a cyber footprint. Of course Penelope comes through. It's not a spoiler to tell that the inevitable exposure and take-down is nail bitingly suspenseful. But from start to finish, this episode ramps things to a fever pitch. If anyone who had passed up watching the series in favor of more intense cable shows; this is the episode to reacquaint yourself with the BAU.