"Firefly Lane" is a novel by Kristin Hannah that explores the deep friendship between two women, Tully Hart and Kate Mularkey, over several decades. Set in the Pacific Northwest, the story follows their lives from adolescence through adulthood, highlighting the challenges and triumphs they face together. The book was adapted into a Netflix series, also titled "Firefly Lane," which premiered in 2021. The show captures the essence of the novel, focusing on themes of love, loss, and the complexities of friendship, while showcasing the characters' personal growth and the impact of their choices on each other's lives.