On September 6, 1988, 8-year-old Helen Chu and 9-year-old Warren Chu were killed in New York in a double homicide that shocked their community. The children’s deaths prompted an intensive NYPD investigation that proved complex and, for a time, went cold as detectives worked to reconstruct what happened.

Years later the inquiry produced a suspect, and that person was arrested and prosecuted. The case went to trial and ended with a conviction, bringing legal resolution to a crime that had long haunted the families and the city.