Blue Bloods Season 4 Episode 21
Overview
After a detective from Danny’s precinct is killed while working undercover, Frank goes above and beyond to find the killer only to discover that the victim held a big secret; Jamie and Eddie help Nicky track down a homeless former classmate.
Director: Greg Beeman
Guest Star: Abigail Hawk, Andrew Terraciano, Gabriel Rush, Gregory Jbara, Haviland Morris, John Ventimiglia, Judy Marte, Kevin Kane, Robert Clohessy, Tony Terraciano, Vanessa Ray