The attempted murder trial of Maui anesthesiologist, Dr. Gerhardt Konig, is underway in Honolulu.

Each side is describing O'ahu's Pali Puka trail, but have different stories of what happened there almost exactly a year ago.

Arielle says her husband dragged her toward the cliff’s edge, attempted to inject her with “an unknown substance” using a syringe, and hit her “repeatedly on the head” with a rock.

Konig claims he was NOT trying to kill his wife, and acted in self-defense after Arielle attacked him when he threatened to expose an alleged affair with a married co-worker.

Jurors hear a witness's 911 call, watch body-worn camera footage from a responding officer, and see photos of Arielle's brutal injuries.

Konig's adult son is expected to testify about a video call his father made after the attack that prosecutors are calling a confession.

Arielle Konig is expected to take the stand against her husband next week.

Joining Nancy Grace today:

• Troy Slaten - Los Angeles Criminal Defense Attorney, Slaten Lawyers; X @TroySlaten
• Dr. Bethany Marshall -  Psychoanalyst, Author: "Deal Breaker," and featured in hit show "Paris in Love" on Peacock; Instagram & TikTok: drbethanymarshall, X: @DrBethanyLive
• Bill Hernandez - Domestic Violence and Sexual Assault Detective in Napa Police Department
• Dr. Kendall Crowns - Chief Medical Examiner Tarrant County (Ft Worth), Host of Podcast, "Mayhem in the Morgue," and Lecturer: Burnett School of Medicine at TCU (Texas Christian University)
• Alexis Tereszcuk - Investigative Reporter, 'Crime Stories'
• Sydney Sumner - Investigative Reporter, ‘Crime Stories’