Blue Bloods is a successful police procedural that combines intense storylines with heartwarming family moments. The show has featured several emotional episodes that have broken fans' hearts. These include "With Friends Like These," which highlights the difficulties faced by people struggling with mental health issues, and "Love Lost," which deals with the topic of medically assisted suicide.Other emotional episodes include "The Blue Templar," which brings closure to the Reagan family following the death of Joe Reagan, and "The Thin Blue Line," which sees Danny's wife Linda tragically killed in a helicopter crash caused by his involvement in a dangerous drug cartel.