CBS

News Social Roundup
Posted on Oct 8, 2013 01:15pm

Season 4 of Blue Bloods has begun and the cast has been tweeting from set and live tweeting broadcasts. Check out tweets and pics from Donnie Wahlberg, Sami Gayle and Amy Carlson, with a special tribute to birthday boy Len Cariou!

Watch episodes and highlights from season 4 now!