The article discusses how the introduction of the character Eddie Janko and her romantic relationship with Jamie Reagan brought a significant change to the show "Blue Bloods". Vanessa Ray, the actress who plays Eddie, talks about how her role expanded after becoming Jamie's partner and eventually his wife. She mentions the adjustment she had to make working with new cast members and how it felt like a new show. Eddie's character has grown and now attends the Reagan family dinners and works with a new partner, Officer Rachel Witten.