Will Estes, who plays Jamie Reagan on "Blue Bloods", has revealed that the most challenging part of playing his character is filming complicated scenes. Despite being on the show for 12 years, he sometimes struggles to bring Jamie to life, but still enjoys the character's gray areas and seeing him in challenging situations. The show has not yet been confirmed for a 13th season, but with the fan love for the Reagans, it's possible their stories will continue into another season.