1: Aidan Quinn guest stars in Blue Bloods Part 1 Finale.

2: Episode details revealed – twists and turns await.

3: Quinn's character brings drama to Reagan family's life.

4: Watch as tensions rise in gripping season finale.

5: Blue Bloods fans can't miss Quinn's intense performance.

6: Emotional moments set stage for shocking conclusion.

7: Get ready for heart-stopping action and surprises.

8: Quinn's role creates chaos in Reagan household.

9: Don't miss final moments of Blue Bloods Part 1 Finale.

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