is a pivotal episode of the long-running police procedural Criminal Minds , originally aired on November 14, 2012. While the series is known for its grim "UnSub" (Unknown Subject) investigations, this episode is widely regarded by fans as a standout for its emotional depth and character development for David Rossi . Core Plot & Case

The Behavioral Analysis Unit (BAU) travels to the Santa Monica Pier in California to investigate a series of horrific murders.

The killer is revealed to be a germaphobe who snapped after contracting a drug-resistant strain of tuberculosis, leading him to "cleanse" the streets of those he deemed "unclean". The Personal Connection: Rossi’s Past

The episode's emotional weight comes from Rossi’s reunion with his former Marine sergeant from the Vietnam War, (played by guest star Meshach Taylor).

The storyline involving Harrison Scott was significant enough that it was revisited in later seasons, marking it as one of the show's most impactful guest arcs. "Criminal Minds" The Fallen (TV Episode 2012) - IMDb

Rossi discovers that Scott, who was once his mentor and superior officer, is now a homeless veteran struggling with alcoholism.

Fans often cite this episode as the moment they truly connected with David Rossi's character, seeing a softer, more vulnerable side beneath his professional exterior. Ratings: The episode holds a 7.7/10 rating on IMDb .

The UnSub is targeting homeless individuals, brutally burning their bodies.