penalver and ibar travelled in the same circle of friends.on the morning of the murders, klimezkco said the two grabbed a tec-9 gun from the hse and later returned driving a new black car. to get a second i.d. on seth penalver, detectives went to an ex-girlfriend, melissa monroe. >> they tell her they're there about seth. eventually they take her back to the police station, they show her the two same pictures, and they're saying to her, who is this? >> the left photograph is pablo ibar and the right photograph is seth. >> melissa monroe had also seen seth and pablo together at casey's bar on the night of the murders. >> i saw them at casey's on the sunday, on -- well, saturday night, sunday morning. i talked to them when i was on the dance floor. seth kept asking me to dance. >> we had all of these witnesses that corroborated and connected seth penalver and pablo ibar to mr. butch casey, the tec-9 gun, and his car. >> seth penalver, a high school dropout with a previous robbery to his name, soon learned he was wanted for murder. >> i actually

couldn't they be the image just as easily as seth penalver?e throwing stuff up to feel doubt. if he saw your brother walking down the street in a video, even though it's blurry, you'd know it's him. >> after ten nerve-wracking days, the jury finally returned on december 21st, 2012. >> you're fraught with just every emotion in the world. >> the moment was captured by cell phone video. >> we the jury find in the following case, as to count one of the indictment, in this case, not guilty. >> it kicks in that you know what? i'm not guilty. i don't know what happened. >> i left my body. i was crying like a baby. it's too much emotion. it's just too much. i could not believe it. like is this even real? i got right on my knees in the middle of the courtroom, and i went to praying and praying and praying. >> later that night, seth penalver walked away from prison a free man. seth's case brought up serious questions about the use of video as evidence in murder trials. >> video is not 100%. sometimes video can create more issues than one would guess. >>