The drama continues on the fourth season finale of 'Blue Bloods.'
Tune to WUSA9 on May 9 at 10 p.m.
When Danny is placed on modified duty after investigating a case that was off-limits, he realizes he stumbled upon something that someone is trying to keep quiet. When he passes the tip on to his father, Frank is alarmed when he learns the enormity of this case and the internal involvement.
Watch the cast of Tom Selleck, Bridget Moynahan, Donnie Wahlberg, Will Estes and Len Cariou.
