Gary Michael Heidnik was an American murderer who kidnapped, tortured, and raped six women who he kept as sex slaves in his basement at 3520 North Marshall Street in Philadelphia, PS.
Heidnik was convicted of killing two women and was executed by the State of Pennsylvania on July 6, 1999. 

Handwritten two page letter hand signed twice, Gary M. Heidnik, on the top front, and at the close, Gary.
Includes the original prison issued mailing envelope hand signed, Gary M Heidnik.