On December 4, 1995, David Graham and Diane Zamora carried out their plan. Around 10:30 PM, Graham called Adrianne Jones and arranged a date. Unbeknownst to her parents, Jones sneaked out of her house later that night to go out with Graham, who picked her up outside.
Prosecutors say that Graham then drove to a deserted road near Grand Prairie, Texas. Zamora was hiding in the hatchback of the car. According to reports, the original plan was that Zamora would come up behind a seated Jones and snap her neck. Graham would help her dump the body in a nearby lake. Graham and Zamora planned to tie weights to Jones's body so that it would sink to the bottom of the lake.
However, things did not go as planned. Apparently, when Zamora grabbed Jones, a struggle ensued. Graham tried to snap her neck by turning it as is done in movies, but found it to be ineffective. Zamora then hit Jones in the head with a weight, but Jones somehow managed to get out of Graham's car and run away. According to his confession, Zamora told Graham that he could not let Jones get away. Graham took his gun, tracked Jones down in the field, and shot her twice in the head. According to Graham's confession, when he returned to the car, he and Zamora exchanged "I love you's." Then, Zamora allegedly told Graham, "We shouldn't have done that, David." They then disposed of their bloody clothes and went home. Adrianne Jones's body was discovered the next day.
On February 17, 1998, after over six hours of deliberations over two days, a Texas jury found Diane Zamora guilty of capital murder in the death of Adrianne Jones. Because of the Jones family's request that prosecutors not seek the death penalty against her, Zamora received a mandatory sentence of life in prison. She will not be eligible for parole until she has served at least 40 years of the sentence.
A Jury in Texas finds David Graham, former Air Force Academy cadet, guilty of murder in killing of Adrianne Jones; he will automatically be sentenced to life in prison.
Love's Deadly Triangle: The Texas Cadet Murder is the movie about this case.