Highlights from the Fifteenth Episode of Season 2 of Blue Bloods

­When a Reagan family friend, an undercover detective, is killed, Linda and the boys worry about Danny.

Interview Room

Interview Room

A Reagan family friend, is killed, Danny (Donnie Wahlberg) and Jackie (Jennifer Esposito) investigate on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
Investigative Process

Investigative Process

A Reagan family friend, is killed, Danny (Donnie Wahlberg) and Jackie (Jennifer Esposito) investigate on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
Dispair

Dispair

When a Reagan family friend, an undercover detective, is killed, Linda and the boys worry about Danny, as his relentless search for the killer takes a toll on his emotional state, on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
Control Center

Control Center

A Reagan family friend, is killed, Danny (Donnie Wahlberg) and Jackie (Jennifer Esposito) investigate on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
In The Dark

In The Dark

When a Reagan family friend, an undercover detective, is killed, Linda and the boys worry about Danny, as his relentless search for the killer takes a toll on his emotional state, on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
Worried

Worried

A Reagan family friend, is killed, and Linda (Amy Carlson) worries about Danny (Donnie Wahlberg) as his relentless search for the killer takes a toll on his emotional state, on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
Taking A Toll

Taking A Toll

A Reagan family friend, is killed, and Linda worries about Danny (Donnie Wahlberg) as his relentless search for the killer takes a toll on his emotional state, on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
Emotions Run High

Emotions Run High

A Reagan family friend, is killed, and Linda (Amy Carlson) worries about Danny (Donnie Wahlberg) as his relentless search for the killer takes a toll on his emotional state, on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.
The Life We Chose

The Life We Chose

A Reagan family friend, is killed, Danny (Donnie Wahlberg) and Jackie (Jennifer Esposito) investigate on BLUE BLOODS. Photo: JoJo Whilden©2012 CBS Broadcasting, Inc. All Rights Reserved.