Hawaii Doctor Found Guilty of Attempted Manslaughter in Cliffside Assault
A Hawaii anesthesiologist has been convicted of attempted manslaughter for allegedly trying to murder his wife during a cliffside hike last year, with the charge carrying a maximum sentence of 20 years.
Jury Deliberation and Verdict
Gerhardt Konig, 47, was found guilty after a Honolulu jury deliberated for a day. The conviction relates to extreme mental or emotional disturbance, as prosecutors argued he planned the attack during a birthday trip in March 2025.
Prosecution's Case: A Planned Attack
Deputy prosecutor Joel Garner told jurors that Konig had multiple backup plans to kill his wife, Arielle Konig. According to Garner, Konig attempted to push her off a cliff, stab her with a syringe filled with an unknown substance, and strike her with a rock. Two hikers who heard her cries for help intervened, stopping the assault.
"Every backup plan ends in Arielle's death," Garner said, displaying evidence including the rock and photos of her injuries.
Defense's Argument: Self-Defense and Marital Strife
The defendant testified that his wife first hit him with a rock, and he hit her back in self-defense. His attorney, Thomas Otake, argued there were no murder plans, suggesting the scenario made no sense. Otake quoted from a birthday card where Konig called his wife "the heart of our family," portraying him as someone struggling with infidelity.
Otake cast doubt on Arielle Konig's account, questioning why Konig would start a scuffle before using a syringe if he intended to kill her. "You would use the syringe first," Otake said. "It makes no sense."
Trial Details and Testimony
The trial, livestreamed by Court TV, aired the couple's marital problems. Gerhardt Konig testified that his wife was having an affair, which he confirmed by unlocking her phone while she slept. Arielle Konig described it as an emotional affair involving flirty messages with a coworker.
During the hike on the Pali Puka trail in Honolulu, Arielle Konig testified that her husband grabbed her toward the cliff's edge, straddled her with a syringe, and she fought back by biting and squeezing him. Gerhardt Konig denied having a syringe or pushing her, claiming he acted in self-defense after being struck with a rock.
Aftermath and Confession Denial
After the attack, Konig called his adult son from a previous marriage, whom authorities said confessed to trying to kill his stepmom—a statement Konig denied. He testified that he intended to jump to his death, believing his marriage and career were over, but decided against it after hiding on the mountain for eight hours.
Prosecutor Garner noted that during the call, Konig made no reference to self-defense. Konig later tried to flee when confronted by police. His wife has since filed for divorce.
Domestic Abuse Support Resources
The national domestic abuse helpline offers support for women on 0808 2000 247, or visit the Refuge website. A dedicated men's advice line is available on 0808 8010 327. In the US, call the domestic violence hotline on 1-800-799-SAFE (7233). Other international helplines can be found via www.befrienders.org.
