"The Devil You Know" is a novel by Elizabeth Haynes that explores the complexities of relationships and the impact of past traumas. The story follows Jade, a woman who becomes entangled in a web of secrets and lies after reconnecting with an old friend. As she navigates her feelings and the consequences of her choices, the narrative delves into themes of trust, betrayal, and the struggle for redemption. Set against a backdrop of suspense, the novel examines how familiar faces can harbor hidden dangers. Jade's journey reveals the challenges of confronting one's past while trying to forge a new path, ultimately questioning whether it's better to face the known or embrace the unknown.