Blue Bloods season 4 returns with its winter premiere on CBS on Friday night, after episode 11 aired in November, with much of the recurring cast returning as well.
In “The Bogeyman,” Danny learns from Nicky that there’s a deadly new brand of heroin hitting the streets
He begins an all-out manhunt for the distributor.
Meanwhile, Frank pulls out all the stops to assist in getting the drugs off the street, according to the episode description.