Finger on The Trigger

On September 2, 2011, a 911 operator in Luzerne County, Pennsylvania, receives a call from Jessica Alinsky, who explains that she and her boyfriend got into a fight and that he died by suicide. Police drive to Alinsky and Matthew Gailie's home, and they find Gaile dead on the floor of their living room from a gunshot wound.

Jessica Alinsky calls 911 to report that she found her boyfriend, Matthew Gailie, dead. Alinsky tells the operator that she thinks Matthew "killed himself." Family members, however, do not believe Matthew would have died by suicide, and investigators realize parts of the investigation are not adding up.

Police recall performing forensic tests on the home of Jessica Alinsky and her boyfriend Matthew Gailie, who was found dead on the living room floor from a gunshot wound. While Alinsky claimed he died by suicide, investigators determined Alinksy had murdered him and staged the crime scene.

Weeks before Jessica Alinksy shot and killed her boyfriend Matthew Gailie, she called police to report a break-in. She claimed the burglar had attempted to steal several of Gallie's hunting guns, but state police troopers were suspicious of her report.

Luzerne County Deputy District Attorney Daniel Zola recalls visiting the crime scene of Matthew Gailie's murder. As a prosecutor, Zola believes it is necessary to see a crime scene before the body is removed so he can accurately and passionately represent the victim during trial.

Family remembers childhood of Matthew Gailie, who was shot to death by his girlfriend Jessica Alinksy. Growing up, Matthew was diagnosed with Addison's disease, but he made a recovery and was able to return to school with his sister, Ariana Gailie.

Deputy D.A. Daniel Zola tells Oxygen.com about the crime scene and trial of Jessica Alinsky.