A 29-year-old man was hearing voices that someone was going to kill him the day he strangled and stabbed his 53-year-old roommate in their Woodstock apartment, according to recent testimony in a McHenry County courtroom.

Expert witnesses testified in the beginning of a bench trial for Branden Napolitan accused of killing Daryl K. Fox Oct. 23, 2015.

Napolitan’s lawyers argued that he is not guilty by reason of insanity while prosecutors counter he is guilty but mentally insane, meaning he knew the criminality of his actions.

Defense attorneys called to the stand Robert Meyers, a clinical psychologist, who said Napolitan was having a “psychotic break” at the time of the murder, hearing voices and experiencing hallucinations.

“He knew killing … was wrong but in his mind he was acting in self defense,” Meyers said.

Meyers said Napolitan called 911 and told responders he is schizophrenic, was hearing voices and he was scared. Napolitan, who admitted to some cocaine use, was taken to a local hospital where he was evaluated, but released. He then walked home and killed Daryl K. Fox, attorneys said.

After killing him, Napolitan stole Fox’s wallet, cellphone, charger and his car and fled to Madison Wis. where he was later apprehended.

Meyers said Napolitan, who was “quite psychotic and confused” at the time of the murder, is a paranoid schizophrenic. He said there is “no way he’s faking” his illness.

He testified Napolitan has been mentally ill since about 18 years old. He has been in inpatient care multiple times since 2007. Napolitan told Meyers he hears threatening voices, and others that guide him such as Adam.

He also said Satan talks to him and is “dragging him to his destiny to be in hell.”

Napolitan also reported having hallucinations of smoking pot with God and seeing God and other shadows in the clouds.

When arrested Napolitan was agitated and showing “dramatic mood swings” and making “bizarre comments,” the doctor said.

Terrance Lichtenwald, psychologist for the prosecution, disputes Meyers’ assessment. He didn’t believe Napolitan was hearing voices or suffering a psychotic break. He believes he is a paranoid schizophrenic, but said mental illness does not make one a killer.

“Spontaneous, random assaults are uncommon,” Lichtenwald said. “He did appreciate the criminality of his actions.”

The doctor said Napolitan took substantial steps to cover up the murder including closing the blinds in the apartment to conceal the body before he fled. He also continued to answer Fox’s phone as if everything was OK, saying a Fox could not come to the phone.

Regarding his many hospital stays the doctor said Napolitan had a pattern of admitting himself when he was broke and homeless.

The bench trial will continue March 9.