Dive into a captivating world of mystery with this three-part "48 Hours" marathon. Uncover chilling details in "The Tree that Helped Solve a Murder," unravel family secrets in "A Killer in the Family Tree," and explore the intrigue of "Murder on the Cape." Experience the gripping power of investigative journalism as each case unfolds, revealing twists and turns you won't see coming. Prepare to be shocked, captivated, and left wanting more.