THE PROSECUTION’S CASE
When the trial opened on April 1, 1990, in Union County, New Jersey, the prosecution’s task was not to prove that John List had killed his family. That was established by the crime scene evidence from 1971, by List’s own letters, and by the decades-old investigation.
The prosecution’s task was to prove that John List was the man who had killed his family — that the person in the courtroom was the person who had been in Westfield on November 9, 1971.
The fingerprint evidence accomplished that. The fingerprints of the defendant matched the military records of John Emil List. This was the core identification evidence, and it was not meaningfully challengeable.
The remaining question for the jury was the legal character of what had happened. The prosecution argued five counts of first-degree murder — the deliberate, premeditated killing of five people. The defense, acknowledging that List had killed the five family members, argued that his mental state at the time of the killings should qualify the charge, reduce it to something less than first-degree murder, or provide a basis for an insanity finding.
The evidence of premeditation was extensive. The gun permit obtained weeks before the killings. The cancellation of deliveries. The notification to the schools. The arrangement to pick up Freddie from soccer practice. The letters prepared in advance. The steps taken to obscure List’s own image in the family photographs. The plan to leave after the killings, executed through a departure via Kennedy Airport.
Each of these elements was evidence of advance planning — of a defendant who had thought about what he was going to do, had made preparations, and had carried out those preparations in sequence. The law distinguishes premeditated murder from murder committed in a sudden passion or without prior deliberation, and the planning evidence here was overwhelming.
The defense’s argument about mental state did not produce an insanity finding or a lesser verdict. The jury was not persuaded that whatever psychological forces were operating within John List in November 1971 had deprived him of the ability to understand what he was doing or to conform his conduct to the law.
On April 12, 1990 — exactly twelve days after the trial began — the jury returned its verdict: guilty on all five counts of first-degree murder.