The second season of Blue Bloods, a police procedural drama series created by Robin Green and Mitchell Burgess, premiered on CBS September 23, 2011 and ended May 11, 2012.

[1] Donnie Wahlberg, Bridget Moynahan, Will Estes, Len Cariou are first credited, with Tom Selleck receiving an "and" billing at the close of the main title sequence.

The cast for season 2 includes: DA Rosselini assigns Erin to reopen an 18-year-old rape case, based on new DNA evidence that exonerates Miles Thomas of the crime.

While driving home from a football viewing party with Linda and his sons, Danny strikes a man who had run into the road ahead of the car.

Meanwhile, Frank deals with survivor's guilt when he learns that his old partner and friend John McKenna is dying from a 9/11-related disease.