pistorius. moments ago in his own words the disgraced track star described the final moments before he shot and killed his girlfriend, reeva steenkamp. >> then i heard a noise from inside the toilet, but i perceived it to be somebody coming out of the poilt. before i knew it, i'd fired four shots at the door. my ears were ringing. i couldn't hear anything. so i shot -- i kept on shouting for receive sa eva to phone the. i still was trying to retreat because i wasn't sure if there was somebody on the ladder, if there was somebody in the toilet. >> let's bring in cnn robyn kurnow from pretoria south africa and kelly phelps, a cnn legal analyst. robyn, you were inside the courtroom for that dramatic moment. take us through how oscar pistorius described that night, when he killed reeva steenkamp.