David Packer

Resentment grows between Ross and Benton when Benton exposes one of Ross' major medical mistakes. Chloe claims that she's sober, but Lewis keeps her away from Susie.

Friends' college acceptance letters shatter Cory's plans for the future.

Warrick investigates a drive-by shooting in his old neighborhood; Nick follows up on the murder of an Internet company worker.

When the chief investigator of a controversial report documenting corruption within the NYPD is gunned down the day before his findings are published, Mac and Stella must find the killer, launching a massive search that makes every officer listed in the report a suspect. Meanwhile, Danny and Aiden investigate the murder of a gypsy cab driver.