The trial at the Westchester County Court in New York lasted three months and became a national melodrama. Harris pleaded temporary insanity and accidental death insisting that she had only wanted to kill herself.The question of intent was the main issue. Defence and prosecution lawyers produced witnesses who argued fiercely over forensics, where Tarnower was when he was shot and the trajectory of the bullets. George Bolen, the prosecution lawyer, argued that Harris descended upon Tarnower in his sleep and shot him. He awoke and put his hand up in a futile attempt to ward off a bullet and then Harris pumped the gun twice more and ran into the bathroom where she threw Tryforos’ things around.Harris’ defence lawyer, Joel Aurnou, was heavily criticised for not sufficiently preparing his client for the trial. The jury wasn’t offered the option of first-degree manslaughter – the mercy option – and the mental health professionals who tested and treated Harris were not called to testify.The most damning piece of evidence against Harris was the 10-page letter she had written to Tarnower. In it she repeatedly called Tryforos vulgar names and it included passages that showed her complete lack of self-worth. Bolen read the letter to the jury who were shocked by its contents and after deliberating for eight days found Harris guilty of second-degree murder. She was sentenced to 15 years to life at the Bedford Hills Correctional Facility in New York.

On Friday, 7 March 1980, the Dean of Students at Madeira found marijuana stems and seeds in the rooms of four of the school’s most outstanding students. Harris expelled all four teenagers and angry parents descended upon the school while the students started a demonstration in protest.Harris received a letter from one of her favourite students condemning her for expelling the four marijuana smoking pupils. In her fragile emotional state this criticism was the final straw and she decided to kill herself.She wrote a letter to Tarnower chronicling the many wrongs she felt he had dealt her and begged him to treat her differently. She also pointed out that Tryforos would persistently ruin her clothes and that some of her jewellery had gone missing. She confessed to making harassing phone calls to Tryforos and destroying anything her younger rival had touched that belonged to Tarnower.On Saturday, 8 March, she wrote a will, but over the weekend she had second thoughts about the letter and decided she didn’t want Tarnower to read it. She called him on Monday 10 March and asked him to throw it away as soon as it arrived. After much pleading Tarnower eventually agreed to see her.In Harris’s version of events she made the five-hour drive to his home planning to spend her final moments with him before putting a bullet through her head at one of her favourite places, a tiny island in the middle of a pond in his grounds.When she arrived Tarnower ignored her and she became angry when she saw Tryforos’ negligee and slippers and a box of pink curlers in his bathroom. She flew into a rage, throwing the garments around and Tarnower slapped her hard in the mouth.She slumped down defeated, took out the gun and pointed it at her head. A struggle between the two ensued and Harris ended up shooting Tarnower five times. Turning the gun on herself proved fruitless because it was empty.

In prison Harris wrote an autobiography and two other books. She spent much of her time working in the prison’s children’s centre and during her term she suffered two heart attacks. After serving 12 years of her sentence in 1992 Governor Mario Cuomo granted her clemency on grounds of ill health.

Dr Herman Tarnower - victimLynne Tryforos - Tarnower’s loverJoel Aurnou - Harris’ defence lawyerGeorge Bolen - prosecuting lawyerRussell Leggett - judgeDr A Bernard Ackerman - defence pathologistDr Louis Roh - scientific witness for the prosecutionProfessor Herbert MacDonnell - scientific witness for the defence

10 March 1980 - Tarnower shot24 February 1981 - found guilty of murder29 December 1992 - granted clemency