"A is for Alibi" is a mystery novel by Sue Grafton that introduces the character Kinsey Millhone, a private investigator in California. The story kicks off when Kinsey is hired to investigate the case of a woman, Nikki Fife, who was convicted of murdering her husband but is now claiming her innocence. Kinsey takes on the challenge, driven by her curiosity and a desire for justice. As Kinsey delves into the past, she encounters a variety of characters linked to Nikki’s life, unraveling secrets and complex relationships. Each clue she discovers adds depth to the narrative, showcasing Kinsey's analytical skills and determination to uncover the truth. The plot thickens as Kinsey finds herself in precarious situations, emphasizing the risks associated with her investigative work. The novel is not only a thrilling mystery but also explores themes of trust, betrayal, and the intricacies of human relationships. Kinsey's character embodies resilience and independence, making her a relatable protagonist. Overall, "A is for Alibi" sets the tone for Grafton’s series, blending clever plot twists with a strong female lead in the world of detective fiction.