Firefly Lane by Kristin Hannah

The novel explores the enduring friendship between two women, Tully and Kate, who meet as teenagers in the 1970s and navigate the complexities of life together over the decades. Despite their contrasting personalities and life choices—Tully's ambition and career-driven path versus Kate's focus on family and motherhood—their bond remains a constant source of support and conflict. As they face personal and professional challenges, their friendship is tested by jealousy, betrayal, and the passage of time, ultimately highlighting the power and resilience of true companionship.