It was a packed courtroom for opening arguments. Here's a quick background on this case. Sixty four year old, Leo Landrum, was found shot to death at his home in the Orange Grove community in May of 2011. According to the prosecutor, Houston Jones shot and killed his step grandfather, threw the murder weapon in a river, and then went to hang out with friends. At first, Jones denied knowing anything about the killing, but later, he admitted that he had shot and killed Landrum. The defense attorney argues Jones did it because he believed Landrum had sexually abused his new born daughter. Jones says he, himself had been the victim of sexual abuse from Landrum for years. On the night of the killing, Jones confronted Landrum about his suspicions and also asked him why he'd abused him. Then Jones shot Landrum three times in the back of the head. The prosecution argues that sexual abuse had nothing to do with why Jones killed his step-grandfather. They say the shooting was the result of an argument that occurred between the two and that Jones invented the story about Landrum abusing the baby after he had confessed to the shooting. In the courtroom today, there were several people crying throughout the case. After the jury left and the judge called a recess, Jones began sobbing as well. A police officer asked him if he was O.K. and escorted Jones out of the room.