ST. SIMONS ISLAND, Ga. — In a late Friday ruling, a jury held a St. Simons Island dentist responsible for the death of her boyfriend.

Suzanne Mericle was convicted on multiple charges, notably felony murder linked to first-degree criminal property damage.

Her conviction stems from the March 2025 killing of James David Barron at their home in Georgia. Besides felony murder, she was also found guilty of reckless conduct, criminal property damage, and evidence tampering.

Juror deliberations began on Thursday and concluded with a verdict announced at approximately 5 p.m. on Friday.

The trial revolved around the events of March 7, 2025, when Mericle shot and killed Barron at their Lake Lanier residence. According to investigators, Barron had locked himself in a bedroom when Mericle fired through the door. The couple had reportedly been arguing over Barron’s affair with a woman named Lilia.

Prosecutors started their closing argument by describing a defendant who had been spiraling for months and snapped ‘for the last time.’ They reiterated Mericle was ‘obsessed’ with Lilia and became ‘unhinged.’

“It was all she talked about. It was all she argued with David about. It was all she ever wanted to talk about with anyone who was willing to listen. And she became unhinged. And that unhinged jealousy was not new to David, nor to the defendant, because before Lilia, there was Laura. And after Laura, there was Meg,” Hall County Assistant District Attorney, Rachel Bennett, said.

Bennett said Barron removed himself from the fight the night of the shooting by going upstairs and locking himself in the bedroom. She argued that Mericle got her gun and shot at the door, knowing Barron was on the other side.

“This defendant did what she always did. She got angry, she got obsessive, she got unhinged, and she spiraled for the last time on March 7th. So David goes upstairs, he’s in the bedroom, and she goes and gets her Glock. She goes and gets her Glock. She walks up the stairs. She gets the gun six inches away from the door. She points, she listens, she aims, and she fires, and Mr. Barron is dead,” Bennett said.

Jurors had to consider the following charges: murder, two counts of felony murder, aggravated assault, criminal damage to property, possession of a firearm in the commission of a felony, and tampering with evidence.

Bennett told jurors Mericle committed murder with malice because she shot the gun at the door in an upward angle about eight inches above the lock while Barron was taking a defensive stance behind the door. Bennett also argued that once Mericle got inside the room, she began ‘covering up’ the crime.