Dennis Andrew Nilsen aka "The Muswell Hill Murderer" and the "Kindly Killer" was one of the most notorious British serial killers and necrophiliacs to ever live. Nilsen was responsible for the murders of at least 12 men. He died in prison on May 12, 2018.
Two page letter dated October 15, 2014 hand signed at the close, Dennis Nilsen. 
He has included an original article from Inside Time, September 2014.
Includes the original mailing envelope postmarked October 2014.

Dennis Nilsen Signed Letter With Envelope And Insert