This episode of Stuff You Should Know explores the true crime case of "Bella in the Wych Elm," a murder mystery from World War II Britain. The hosts discuss the initial discovery of the body, the subsequent investigation, and the various conflicting theories and misinformation that have surrounded the case over the decades. They highlight the contributions of James Webster's initial forensic work and Una Mossop's later testimony, contrasting these with the unreliable accounts of writers like Donald McCormick. The episode emphasizes the importance of verifying sources and separating fact from fiction in true crime investigations, illustrating this with the inaccurate details often associated with the case. Ultimately, the hosts present Una Mossop's account as the most plausible explanation, despite the case remaining officially unsolved.