Luis Carino was charged with assault with intent to commit mayhem and possession of an unlicensed firearm. The prosecution alleged that Carino hit Norilys Richardson, his live-in girlfriend, with a stick and then shot her three times. Carino’s testimony gave a completely different account of the events. Carino testified that Richardson started hitting Carino with the stick first and that Richardson had the gun in her pocket and Carino had wrestled it away from her. Carino attempted to testify that Richardson had previously been convicted of voluntary manslaughter. The trial court ruled that Richardson’s prior conviction was inadmissible. The jury convicted Carino. He appealed.