Passed a stress test analyzer with his statement.
Liars have hard times with those things.
"He took my head and slammed it against the concrete several times, and each time I thought my head was going to explode and I thought I was going to lose consciousness," George Zimmerman told police the day after he shot and killed Trayvon Martin.
"I started screaming for help," but Martin pressed his hands over Zimmerman's mouth and nose, he said. "He told me to shut the fk up, and I was suffocating."
Zimmerman told police he was lying on the ground, but his head was on the concrete.
"I didn't want him to keep slamming my head on the concrete so I kind of shifted. But when I shifted my jacket came up…and it exposed my firearm. That's when he said you are going to die tonight. He took one hand off my mouth, and slid it down my chest. I took my gun aimed it at him and fired."
The latest and most detailed account yet of what happened in Sanford, Fla., on Feb. 26 comes from a voice stress test that Zimmerman passed, along with a video re-enactment, a handwritten statement and audio interviews conducted in the days after the shooting by investigators.
Zimmerman said he was driving to buy groceries when he spotted the unarmed teen walking near a house that he knew Martin did not live in and called police to report a suspicious person.
"I just felt like something was off about him…and there's been a history of break-ins ... so I said you know just better to call. I kept driving and I passed him, and he kept staring at me and staring around," Zimmerman said.
He took investigators to the house where he first spotted the teen and got on the phone with police. At that point he says he lost sight of Martin.
With bandages clearly visible on the back of his head in the video, he took investigators through the neighborhood showing them where he was when the responder told him that he did not have to follow Martin. Zimmerman says by the time of the request he was no longer in his car and wanted to figure out exactly where he was in the subdivision, so that the officer dispatched to the scene could find him.
"I was walking back. I didn't see anything again, came back to my truck and when I got to right about here, he yelled from behind to me."
"He said, 'Yo, you got a problem?' and I turned around and said no I don't have a problem," said Zimmerman.
"I went to grab my cell phone, but I left it in a different pocket. I looked down at my pants pocket, he said, 'You got a problem now' and then he was here and he punched me in the face," said Zimmerman, throwing a punch near his own face to illustrate.
"I think I stumbled and I fell down, he pushed me down, somehow he got on top of me... I was trying to push him away from me. He got on top of me somewhere around here, and that's when I started screaming for help. I started screaming HELP as loud as I could. I tried to sit up. That's when he grabbed me by the head and he tried to slam my head down," Zimmerman said.
"He kept slamming and slamming, and I kept yelling HELP, HELP, HELP as loud as I could," he said.
In the voice stress test video, which begins with a bandaged Zimmerman commenting to an officer on the high price of health insurance as a reason he was hesitant to get treatment the night of the shooting, he later calmly questioned an officer about what she did on the force.