The main cast of the television show "Blue Bloods" includes Donnie Wahlberg, Tom Selleck, Bridget Moynahan and Will Estes. Len Cariou, Tony Terraciano, Andrew Terraciano and Amy Carlson are also main cast members. All of these actors and actresses have appeared in more than 100 episodes as of March 2015.
Selleck plays New York police commissioner Frank Reagan, who is the son of former commissioner Henry Reagan, played by Cariou. Selleck's character must balance his duty to the people of the city and caring for his proud Irish-American family. All members of the Reagan family are involved in law enforcement in some way in New York.
Wahlberg plays Danny Reagan, a detective for the New York Police Department and a former member of the United States Marine Corps. Wahlberg's character often uses unorthodox and sometimes dubious methods to solve cases. Moynahan plays Frank's only daughter, Erin Reagan-Boyle, a New York assistant district attorney. The lawyer is a single parent to a teenage daughter named Nicky.
Estes portrays the youngest of Frank Reagan's children, Jamie Reagan. His character gives up the posh life of a lawyer with a Harvard Law School degree to become a police officer during the pilot episode.
"Blue Bloods" airs on CBS on Friday nights as of March 2015. The police and crime drama began in September 2010.