Used book – Fifty Shades Darker (Fifty Shades, Book 2): The Fifty Shades Trilogy, E L James

Overwhelmed by Christian Grey's dark secrets, Anastasia Steele ended their relationship to focus on her career as an editor. But Grey still occupies her every thought, and when he proposes a new arrangement, she cannot resist him. Little by little, she uncovers the painful past of her notorious Mr. Fifty Shades. As Christian battles his inner demons, Ana must make the most important decision of her life... Romantic, liberating, and utterly addictive, the Fifty Shades trilogy will obsess you, possess you, and leave its mark on you forever.