🧠 BTK UNMASKED: The Profiler Who Cracked America’s Most Sadistic Killer

Never-before-heard tapes from the FBI’s Behavioral Analysis Unit reveal how a "linguistic fingerprint" trapped Dennis Rader—not DNA. Learn how his church deacon persona fooled pastors, and why he taunted police with "Cryptic Kill Codes" in cereal boxes. Featuring an interview with the agent who noticed one grammatical error that doomed him. Why did the silettoes turn on Brudos , but the doll mask that BTK Dennis Rader wore is extremely freaky, can you explain it?