As of October 2015, the only original cast member of "Blue Bloods" to leave the show is Jennifer Esposito. She played the recurring role of Jackie Curatola for the first three seasons of the show.
"Blue Bloods" premiered on September 24, 2010, and focuses on the Reagans, a family of Irish-American police officers. Main cast members include Donnie Wahlberg as Danny Reagan, Tom Selleck as Frank Reagan and Bridget Moynahan as Erin Reagan-Boyle. Supporting cast members include Len Cariou as Henry Reagan, Will Estes as Jamie Reagan and Amy Carlson as Linda Reagan. The sixth season of "Blue Bloods" premiered on CBS on September 25, 2015.