Gerhardt Konig appears before a judge via video during an arraignment hearing last year in Honolulu after he was indicted on a charge of attempting to kill his wife.
The son of a Hawaii doctor accused of bashing his wife’s head with a rock during a birthday hike testified in his father’s attempted murder trial Tuesday that his dad told him he planned to take his own life after he tried to kill Arielle Konig.
Emile Konig, 19, said Gerhardt Konig made the disclosure during a FaceTime call on March 24, 2025, the day authorities say he attacked his wife on the Pali Puka Trail, northeast of Honolulu.
During the call, Emile Konig told jurors, Gerhardt Konig said that his wife was cheating on him and that he tried to kill her.
Emile Konig recalled his father’s telling him that “he would not be making it back to Maui and to take good care of the younger kids.” Emile Konig added that his father said he planned to jump from a cliff, and he said he told his father not to.
The son testified for less than an hour. He did not look at his father as he entered the courtroom in Oahu.
Prosecutors have alleged that Gerhardt Konig pushed Arielle Konig toward a cliff while the couple were on a hike for her birthday. Deputy prosecuting attorney Joel Garner said Gerhardt Konig, an anesthesiologist, came at her with a syringe and hit her in the head with a rock.
Konig, 47, has pleaded not guilty to second-degree attempted murder. His attorney has said his client acted in self-defense, striking his wife with a rock after she began fighting with him.
During the FaceTime call, Emile Konig said, his father never mentioned having to defend himself.
In testimony last week, Arielle Konig said the alleged assault happened after her husband asked her to pose for a cliffside selfie. She said she felt uneasy about the location and asked him to move so she could get by safely.
He grabbed her and pushed her toward the cliff, she testified, and she threw herself to the ground to try and grab hold of trees and shrubs. He climbed on top of her, she said, and had a syringe in his hand.
“Nobody’s coming to save you,” Arielle Konig recalled him saying.
After she batted away the syringe, Gerhardt Konig picked up a rock and began striking her in the head, she testified. She screamed, she told jurors, and escaped after she heard another hiker say she was calling 911.
Body camera video played during the trial showed the hikers helping Arielle Konig, who had a bloody face and a bandage wrapped around her head.
In the months before the attack, she testified, her husband discovered an “emotional affair” she’d been having with a co-worker. They’d gone to counseling, she said, and appeared to be repairing the damage she’d caused to their relationship
‘He tried to kill her’: Son testifies father confessed to attack on stepmother at Oahu trail
HONOLULU (HawaiiNewsNow) – Emile Konig testified his father confessed to trying to kill his stepmother during a FaceTime call following an alleged attack at the Pali Puka Trail on Oahu.
Emile Konig, who was 19 during the incident, took the stand as a key prosecution witness against his father, Gerhardt Konig. Last March, Emile was living with his father and stepmother, Arielle, and two half-siblings in Kahului, Maui.
He referred to his father as the defendant, and said he had not spoken to his father since that day.
Emile testified that after the alleged attack, Gerhardt made a video call to him on FaceTime. He saw blood on his father’s shirt.
“He would not be making it back to Maui and to take care of the younger kids and that Ari, my stepmom had been cheating on him and that he tried to kill her,” Emile said.
Emile described emotional moments where his father wanted to harm himself.
“During that call, the next plan that he said was to jump off the cliff,” he said.
Deputy prosecutor Joel Garner asked how he reacted.
“I told him not to,” Emile said.
He testified his father did not say anything about self-defense. In opening statements, Konig’s defense attorney, Thomas Otake, said Arielle attacked first.
During cross-examination, Otake questioned Emile about the FaceTime call.
Otake asked if Emile saw blood on his father’s shirt.
“Yes,” Emile said.
Otake asked if Gerhardt told him it was Arielle’s blood.
“Yes,” Emile said.
Otake asked if Gerhardt explained that Arielle had been cheating on him for a couple months.
“Yes,” Emile said.
Otake asked if Gerhardt told him the blood was from her head.
“Correct,” Emile said.
Otake asked if half an hour earlier everything seemed fine.
“Yes,” Emile said.
During testimony, Gerhardt sat in the courtroom showing no emotion. Emile’s grandparents also watched stoically.
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