David Bullock was born on November 13, 1960, in New York City. He had a difficult childhood. Both of his parents struggled with alcohol addiction. Because of this, Bullock was raised by his grandfather. Growing up, he faced many challenges that shaped his early life.

Bullock attended school but did not have a stable educational experience. At the age of 16, he was arrested for the first time in February 1977. Following his arrest, he was sent to jail. After spending time in prison, he was expelled from school. This marked a turning point in his life, as he started to face more legal issues.

In the months after his expulsion, Bullock continued to get into trouble. He was arrested again for theft five months after his first arrest. After pleading guilty, he served several months in a juvenile facility. By November of that year, he was released, but shortly after, he was arrested again for burglary.

After these events, Bullock moved permanently to Manhattan. With no job or steady income, he turned to male prostitution to support himself.

David Bullock was arrested on January 14, 1982, while being questioned about the disappearance of his roommate, Michael Winley. During the search of the apartment building's basement, police found a .38 caliber revolver and a shotgun. Bullock confessed to killing six people.

His first victim was James Weber, a 42-year-old teacher and actor. Weber's body was found on December 5, 1981, in Central Park. Bullock shot Weber and took his money and identification, which delayed the identification of the victim. The circumstances of Weber being in the park at night were unclear. Bullock claimed that he had gone to the park to shoot birds and killed Weber at random.

A few days later, Bullock killed Edwina Atkins, a 23-year-old friend and prostitute. He shot her after she dismissed his previous murder confession with laughter. He then set fire to the apartment to destroy evidence of the crime.

On December 15, Bullock shot Stephen Glenn Hassell, a 29-year-old investment consultant. Hassell had invited Bullock to his luxury apartment, where Bullock shot him while covering his face with a pillow. Bullock escaped the scene without leaving any evidence behind.

Bullock's fourth victim was Heriberto Morales, a 50-year-old man whom he had known. After attending a Christmas party together, they went to Morales' apartment. Bullock shot him after he began to comment on a Christmas tree. Bullock stole valuables from Morales and also set fire to the apartment.

The last confirmed victim was Eric Michael Fuller, a 28-year-old security guard whom Bullock shot on January 4, 1982, during a robbery.

During his confession, Bullock also admitted to killing his roommate, Michael Winley, on December 23, 1981, stating that he had disposed of Winley's body in the Harlem River. Authorities searched for Winley's body but were unsuccessful. After examining the crime scenes, ballistic experts confirmed that the same .38 caliber revolver was used in multiple murders.

Bullock’s trial began in the fall of 1982, where he was charged with six counts of murder, although Winley's body remained missing. Psychiatrists found that Bullock had no significant mental illness but an unstable emotional state. He described his crimes in detail during the trial and showed no remorse. In October 1982, he pleaded guilty, stating that he killed for pleasure. He was sentenced to 150 years in prison.