Emile Konig, the son of Gerhardt Konig, took the stand on Tuesday against his father Gerhardt Konig. Gerhardt is accused of attempting to kill his wife while the two were on a hike in Honolulu. According to investigators, Dr. Konig allegedly pushed his wife toward a cliff, tried to inject her with a syringe, and struck her repeatedly with a lava rock. Emile discussed several phone calls he had with his father on the day of the alleged incident.