Blue Bloods - Smack Attack

What starts off as a typical American teenage party, alcohol, sex and drugs, suddenly turns nasty when a number of yound kids start dying from a lethal overdose.  Was it a mistake, a bad drug mix or something simpler but somehow more disturbing?
A well written story filled with red herrings and twists plus it opens up some discussion about privacy and people's rights and whether they should be violated for the greater good.
One of the better episodes of Blue Bloods.  Start watching it will ya!