"It's a Sin" is a British television drama series created by Russell T Davies. Set in the 1980s, it follows a group of friends living in London during the height of the HIV/AIDS crisis. The show explores their lives, relationships, and the impact of the epidemic on the LGBTQ+ community. The series highlights the stigma and discrimination faced by those affected by the disease, while also celebrating love and friendship. It features a diverse cast, including Olly Alexander, Nathaniel Curtis, and Keeley Hawes, and has been praised for its emotional storytelling and representation of LGBTQ+ issues.