The first season of Blue Bloods, an American police procedural–family drama television series, aired in the United States on CBS between September 24, 2010 to May 13, 2011. The series was created and along with Leonard Goldberg and Michael Cuesta, executively produced by Robin Green and Mitchell Burgess. The show revolves around the Reagan family, consisting of the retired police commissioner, current police commissioner, police officers, and an assistant district attorney, all working with the New York City Police Department (NYPD). Actors Donnie Wahlberg, Bridget Moynahan, Will Estes, Len Cariou and Tom Selleck make up the main cast as the Reagan family—Danny, Erin, Jamie, Henry and Frank. Blue Bloods first season aired during the 2010–11 television season on Fridays at 10:00 p.m. EST. The series debuted with the pilot episode, which was viewed by 13.01 million viewers. The season ended with the finale "The Blue Templar", which was watched by 11.79 million viewers. The season averaged 12.58 million viewers per 22 episodes. Internationally, the first season was very successful in Canada, United Kingdom and New Zealand, ranking among the top 30 most watched programs on the respective channels. The first season also garnered positive reviews from television critics, praising the performances of lead actors Donnie Wahlberg and Tom Selleck and the family dynamic among the Reagans. A running theme through the first season is Jamie's assumption of Joe's investigation. The FBI tried to recruit Jamie, but instead he conducted his own covert investigation into Joe's murder. The corrupt cops were operating within a fraternal organization called the "Blue Templar", and murdered Joe when his covert investigation was getting close to exposing names. Joe's assailants attempt to kill Jamie by sabotaging the brakes in his car; however, this effort backfired. After the failed hit, Jamie informs Frank, Danny, and grandfather Henry about the results of his informal investigation. Along with Frank's prosecutor daughter Erin, the Reagan family completes Joe's Blue Templar investigation. After gathering sufficient evidence to obtain arrest warrants, Frank personally leads a squad of police officers, including Danny and Jamie, to execute the warrant. They arrest the corrupt cops while they are having a covert meeting to divide stolen drug money. The group's leader, a detective named Sonny Malevsky, admits to killing Joe. After his confession, Malevsky commits suicide with his service pistol. The entire season was released on DVD in Region 1 on September 13, 2011, Region 2