Dennis Lynn Rader is an American serial killer known as Wichita Kansas' "Bind Torture Kill" aka "BTK" who was convicted of 10 murders which occurred between 1974 and 1991. 

Original birthday card sent to the BTK killer by author and forensic psychology professor, Katherine Ramsland.

Hand signed, Katherine.
Rader has handwritten two lines of writing on the inside of the card.