Found on the camera's memory card were pictures of their final sexual encounter, shots of Alexander in the shower -- seconds before he was killed -- and pictures that appeared to be taken accidently when the camera was dropped. One of the images shows Alexander's bloody body, and another shows Arias dragging his body across the ground.
In a series of jailhouse interviews since her 2008 arrest, Arias repeatedly changed her story. First she denied being at Alexander's house the night of the murder, but two weeks later, she told the TV show "Inside Edition" she was there.
"I witnessed Travis being attacked by two other individuals," she said, "Who were they? I don't know."
Now she admits to killing Alexander, but says she had to after he attacked her when she dropped his new camera.
"Jodi Arias killed Travis Alexander," Willmott said in court Wednesday. "The million-dollar question is what would have forced her to do it, and throughout this trial you will hear that Jodi was indeed forced."
Willmott told the court that Arias, who has remained in jail since her arrest, repeatedly lied about the killing because she was scared.