Andre Crawford, serial killer who authorities call Chicago's most prolific serial killer since, John Wayne Gacy. Crawford was convicted of 11 murders in the Englewood and New City neighborhoods of Cook County Illinois. Crawford is suspected of more than the 11 killings he was convicted of committing. Two page handwritten letter signed, Andre. Includes the original pre conviction county jail mailing envelope postmarked July 3, 2007. Signed, Andre Crawford.