Tom Selleck is the cornerstone of the hit CBS series "Blue Bloods" where he plays the role of Frank Reagan, the no-nonsense patriarch of a family with ties to law enforcement. Selleck's leadership of the Reagan family is what holds the series together, particularly showcased in the family dinners. Co-stars Vanessa Ray and Will Estes credit Selleck for keeping the audience engaged, as he is a respected leader both on and off the show. Selleck's extensive experience in acting has made him a valuable mentor for the rest of the cast.