. "I Survived BTK (also released under the titles Feast of the Assumption: BTK and the Otero Family Murders and Feast of the Assumption: the Otero Family Murders), is a feature-length, true-crime/horror documentary produced by UNSUB Films and directed by Marc D. Levitz.The film focuses on Charlie Otero as he copes with discovering the truth behind the murders of four of his family members by Dennis Rader, a serial killer known as \"BTK\"."@en . . . . "5220.0"^^ . . . "I Survived BTK"@en .