joe de la luz, the officer who was shot, and he also ended up being the person who was in charge of this murder investigation. so after the shooting of bill ewell's friend, bill ewell decides to take another look at ruben cantu. >> by now, juan moreno had twice failed to identify ruben cantu as the shooter. but with ruben in custody, ewell sent a detective to juan's home. >> i took the photos, the forms and a portable typewriter. i showed juan this array. he sat there and looked at them and looked at them and looked at them and he shoved them aside and looked away from them. he said, "look, i know who did it. i know who shot me. so why do i have to identify anyone out of this photo array?" i said, well, who did it? he said, "ruben cantu." we went round and round.