"Blue Bloods" Season 3 ends with a storyline that unfolds across its final two episodes: "The Bitter End" and "This Way Out." The arc revolves around a conflict that plays out between local law enforcement and the residents of the Bitterman housing project, which is unofficially referred to as "The Bitter End." 

The storyline begins with the shocking deaths of a young woman and her infant son, and it only gets increasingly darker and more intense from there. In fact, the first half of the storyline even ends with the death of Vinny Cruz (Sebastian Sozzi), which leads the central members of the Reagan family to come together in order to bring Vinny's killer to justice in the show's Season 3 finale.

After several more surprisingly violent moments and unexpected twists, the Reagans manage to do just that. However, the storyline's relatively happy conclusion doesn't take away from just how dark and intense it is. The storyline earns its two-episode length by repeatedly hitting viewers with a number of legitimately shocking twists and emotional plot beats. It sends the show's third season out on a bittersweet high and easily ranks as one of the most memorable arcs that "Blue Bloods" has ever delivered.

Taking all that into account, it's not hard to see why "The Bitter End" and "This Way Out" are still the highest-rated episodes of "Blue Bloods" Season 3 on IMDb.