Joseph Christopher

The Discovery Channel cable network television show The FBI Files first aired its Joseph Christopher investigation, on May 9, 2000, titled the ".22 Caliber Killer".

He pleaded not guilty to the three murders and refused counsel by lawyers hired by his mother, opting instead to represent himself. He was subsequently found guilty and sentenced to 60 years in prison, but this ruling was overturned as the trial judge had barred the defense from presenting expert psychiatric testimony about Christopher's ability to stand trial. He was later found competent to stand trial, and appeared in court again in 1985 under various charges which led to him being sentenced to life imprisonment. While imprisoned at the Attica Correctional Facility, Christopher claimed that he committed 13 killings. He died in prison due to a rare form of male breast cancer on March 1, 1993, at the age of 37.

When back at Fort Benning, Christopher attacked a black soldier with a paring knife in what was described as an unprovoked attack on January 18. The soldier survived the attack and Christopher was placed in the fort's stockade, where he attempted suicide by cutting himself with a razor. In a subsequent psychiatric session, he told a psychiatrist that he "had to" kill blacks. This admission caused Christopher's home to be searched by the police. There the police found evidence linking Christopher to three murders, which led to his indictment in April 1981 and his transfer back to Buffalo for his trial on May 8.

Christopher's murder spree began on September 22, 1980, when he killed three black men and one boy in the space of 36 hours with a .22 caliber sawed-off rifle. These murders led to the media epithet of the .22-Caliber Killer. 14 year old Glenn Dunn was the first victim. He was shot outside a supermarket in Buffalo on September 22. 32 year old Harold Green was shot the next day while dining at a fast food restaurant in Cheektowaga. That same evening, 30 year old Emmanuel Thomas was shot while crossing the street to his home, only 7 blocks away from Glenn Dunn's murder. On September 24, Joseph McCoy was shot to death in Niagara Falls.

Christopher, who suffered from paranoid schizophrenia, reached out for assistance after noticing his mental health slipping in 1978. He tried to admit himself to the Buffalo Psychiatric Center in September 1980. The Psychiatric Center staff told him he was not a danger to himself or others and so could not be admitted. This was a common practice at a time when such centers were being downsized. Instead, the center officials recommended counseling therapy. Fourteen days after he left the center, the killings began.

He enrolled in the automotive mechanics program at Burgard Vocational High School in 1971. He was remembered as a quiet student who did well in his shop courses before dropping out in early 1974, and was said to be "very intelligent, though he wasn't book-smart." He then worked a series of odd jobs before securing employment as a maintenance man at Canisius College, where he shared a midnight shift with a co-worker. He was fired in March 1979 for sleeping on the job and returned to live with his parents.

Joseph Gerard Christopher (July 26, 1955 – March 1, 1993) was an American serial killer who gained infamy for a series of murders in the early 1980s. He is believed to have killed at least twelve individuals and wounded numerous others.

Joseph Gerard Christopher was born in Buffalo, New York on July 26, 1955, as the only son born to Therese (née Hurley) and Nicholas Christopher. His mother was a registered nurse, and his father was a maintenance worker with the city's Sanitation Department. Joseph had two older sisters and one younger sister. Nicholas was an outdoorsman and hunter who taught Joseph how to shoot and handle weapons at a young age; according to friends, Joseph had a passion for the outdoors which exceeded all of his other interests.