Jeffery Tolliver is a fictional character from the book series written by author Karin Slaughter. He serves as a detective in the Grant County novels, known for his complex personality and dedication to solving crimes. His character often grapples with personal and professional challenges, making him relatable to readers. In the series, Tolliver works alongside other key characters, including Sara Linton and Will Trent. His interactions with them highlight themes of loyalty, love, and the impact of past traumas. Through his investigations, Tolliver uncovers not only the truth behind various cases but also deeper insights into human nature.