Bob Ruff explores the original case's flaws to lay the groundwork for his evidence-driven investigation; after determining the boys' final movements, Bob meets with a DNA expert to discuss new technology that might break the case wide open.

Bob examines the case's sensational theories, develops a criminal profile, and seeks permission from the West Memphis Three for new DNA testing; after an exclusive interview related to the case, Bob narrows his focus in his hunt for the truth.