>> the root matched jodi arias. >> a crime scene specialist testified she found jodi's bloody handprintthe wall. martinez had that part of the wall brought in to court. >> what is it? >> this is the piece of wall that was cut out and collected as item number 77 lb. >> and this is what we're looking at in this photograph? >> while it's still in the wall, yes. >> perhaps the most damning evidence came from this sony camera, discovered in travis's washing machine. after weeks of work technicians restored photos that were once deleted. >> and with regard to the items that were deleted, were there some that involved mr. alexander in the shower? >> yes. >> what made these pictures key to the case had to do with a feature built into the camera. >> these images when you take them with this camera, it embeds the date and time that the camera has set on it to the file itself. >> meaning for the prosecution those photos along with the other evidence told a story. that jodi showed up at travis's home around 4:00 a.m. on june 4th, 2008. they had steamy sex until about 5:00 p.m., photographing each o