A judge and a lawyer receive suspicious-looking envelopes in the mail -- envelopes which both explode, revealing themselves to be full of nothing more than harmless white powder. Or maybe the powder isn't so harmless, since one of the recipients goes into cardiac arrest. As the 15th precinct investigates this case, Capt. Fraker (Casey Siemaszko) of the IAB offers to turn the heat off John Clark Jr. (Mark-Paul Gosselaar) in the matter of his dead prostitute informant -- provided that John turns up evidence to destroy his own partner, Andy Sipowicz (Dennis Franz). Meanwhile, John's detective father (Joe Spano) cuts a deal that bodes ill for the future, and gay cop John Irvin (Bill Brochtrup) makes plans to lavishly spend his huge inheritance. ~ Hal Erickson, Rovi
