Being a part of the Reagan family on CBS’ cop drama “Blue Bloods” isn’t easy, but it looks like things are going to get even tougher for the TV cop clan after an unexpected death shakes up the family.

On the Feb. 24 episode, “The Life We Chose,” a close friend of the Reagan family, an undercover detective, is killed in the line of duty. Linda (Amy Carlson) and the kids begin to worry about Danny (Donnie Wahlberg), whose relentless search for the killer starts to take a toll on his emotional state.

“It’s always personal for cops when another cop goes down,” Wahlberg told HuffPost TV during a February set visit. “Especially for this family because Henry is a former police commissioner and Frank is the current police commissioner. There’s a brotherhood among all police officers. When one goes down, it affects them all. It always hits home with the Reagans, but this one hits even closer to home because it’s Danny’s friend.”

Read full article on HuffingtonPost.com.