Hey everyone, I'm Ashley Bannfield and this is Drop Dead serious. It is day 28 of Karen Reed's

murder trial and the defense is betting big on science. Today jurors heard from a crash reconstruction

expert named Daniel Wolfe. He came armed

with videos and physics and a very, very specific conclusion. And that was that Karen Reed's

SUV did not strike John O'Keefe in the night in question. But the prosecution didn't let it go unchallenged.

It was a real tug of war in the courtroom today over dummy arms and Moroccan tail lights and

even encrypted messaging apps. So let's get right into it. The day began with Daniel Wolfe

on the witness stand, again, an expert in car crashes.

Wolf's job was to figure out whether Karen Reed's SUV could have hit John O'Keefe

and if it could have caused the injuries that John sustained.

To find out, Wolf and his team ran a bunch of tests.

They used a real Lexus SUV just like Karen's.

And they used crash test dummies that were wearing sweatshirts just like Johns.

They even created a fake taillight shaped like the broken one on Karen Reed's car.

And then they had that ta light hit the dummy in all sorts of different ways at all sorts of different speeds. The jury saw video after video of these tests. And Wolf explained what happened in each one of them and how the results didn't match the real damage on Karen's SUV or on John's clothing.

One test showed the SUV driving 24 miles an hour and at that speed the back window shattered and the bumper got wrecked. But I think you'll know if you've been

following this case, Karen Reed's car did not have any damage like that. Other tests show that the

dummy's hoodie got scuffed in ways that did not match the holes in John's real sweatshirt. Alan Jackson, Karen's hot-shot lawyer,

asked Wolf if tail light pieces could have cut or torn John's clothing. And Wolf said no. At one point,

Wolf explained something else important. He said he didn't think that the red plastic pieces from Karen's

tail light could have caused John's injuries because they were too small and that the shapes

didn't fit. Then Reed's lawyer started asking Wolf some personal questions, questions about

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