Host and retired detective Lt. Chris McMullin gives insights on crimes that took place in a region steeped in rich history and vibrant culture that is known for tenacity and grit. Archival footage, exclusive first-person interviews with former and current Philadelphia area detectives, and cinematic recreations provide an insider's view into the heartrending cases Philly's finest diligently worked to solve. The series delves into the twists and turns of the most harrowing murders committed in the city known as America's birthplace.

A young man descends into extremism, fueled by conspiracy theories. A fact-driven woman intervenes, attempting to guide him back to reality amidst his radicalization journey.