"Take a sample and get it back to the labs. I want to know what the suspect used for an explosive and if possible, where he got it from." The tech dipped his head and got to work. Meanwhile, Croaker continued his search around the walls. He ran his fingers lightly over the charred surface and paused over another incongruity. Quietly speaking mostly to himself, he questioned the latest reveal. "This day just keeps getting stranger and stranger. What are the odds that something would leave a straight line after being burnt?" He pressed on the line and heard a click then gave an "ahh!’ sound as a hidden door swung open.