Answer
Dennis Rader, also known as BTK (Bind, Torture, Kill), restarted his correspondence with law enforcement and the media in 2004 after a 25-year hiatus. Rader's letters had ceased after his initial killing spree in the 1970s, leading many to believe that the BTK killer had ceased his activities. His decision to resume communication remains unclear but contributed to his eventual capture and conviction in 2005.