big developments in the george zimmerman case. new testimony shedding light on what happened on the night zimmerman shot trayvon martin. has the investigator whose affidavit led to the second degree murder charge just undermined that very charge? we ll show you what he said in kelly s court. but next we ll show you zimmerman s testimony tonight entirety. i wanted to say i am sorry for the loss of your son. i did not know how old he was. i those was a little bit younger than i am and i did not know if he was armed or not. [ grandfather ] that a boy!