<Li> Jennifer Esposito as Detective Jackie Curatola </Li> <Li> Amy Carlson as Linda Reagan </Li> <Li> Sami Gayle as Nicole "Nicky" Reagan - Boyle </Li> <P> Blue Bloods premiered with the pilot episode, which attracted 13.01 million viewers . After four episodes, the season received a full order of 22 episodes . The series was the most watched program on Friday nights during its duration and was the second most watched program during its short move to the Wednesday timeslot . Apart from the pilot episode, the most - watched episode of the season was "Little Fish", which accrued a viewership of 12.30 million viewers . The series finale was watched by 11.78 million viewers . The season averaged over 12.58 million viewers and a 7.8 / 14 household rating, becoming the 19th most - watched series of the 2010 - 2011 primetime television season . In the 18 - 49 adult demographic, the season averaged a 2.2 Nielsen rating, equating to 2.88 million viewers and ranking number 85th for the 2010 - 2011 primetime television season . </P>

Who plays nicky on blue bloods season 1