El Marginal is a critically acclaimed Argentine crime drama series that premiered in 2016. The show is set in a maximum-security prison and follows the story of a former police officer who goes undercover to investigate a kidnapping case. As he navigates the dangerous world of the prison, he uncovers a web of corruption and violence. El Marginal has been praised for its gritty and realistic portrayal of prison life, as well as its complex characters and gripping storyline. The series has gained international recognition and has been praised for its high production values and strong performances.