Sue Simpson

There was a lot there, Andrea. First, he gave a long list of things that he'd reviewed in the case. The police reports and witness statements, ring camera video from John O'Keefe's house, other surveillance video from the bars that John and Karen had been to that night. He looked at photos and videos from the scene, cell phone data, jams.

There was a lot there, Andrea. First, he gave a long list of things that he'd reviewed in the case. The police reports and witness statements, ring camera video from John O'Keefe's house, other surveillance video from the bars that John and Karen had been to that night. He looked at photos and videos from the scene, cell phone data, jams.

GPS data, weather reports, and the media interviews that Karen did, including her interview with Dateline. He also told jurors that he went to the front lawn. He lives in California, and he traveled to the front lawn in Canton, Massachusetts, where John O'Keefe's body was found. He took photographs there, and he made measurements, and he came up with a computer model.

GPS data, weather reports, and the media interviews that Karen did, including her interview with Dateline. He also told jurors that he went to the front lawn. He lives in California, and he traveled to the front lawn in Canton, Massachusetts, where John O'Keefe's body was found. He took photographs there, and he made measurements, and he came up with a computer model.

GPS data, weather reports, and the media interviews that Karen did, including her interview with Dateline. He also told jurors that he went to the front lawn. He lives in California, and he traveled to the front lawn in Canton, Massachusetts, where John O'Keefe's body was found. He took photographs there, and he made measurements, and he came up with a computer model.

He even bought the same type of SUV that Karen was driving that night to do some testing.

He even bought the same type of SUV that Karen was driving that night to do some testing.

He even bought the same type of SUV that Karen was driving that night to do some testing.

He did. He did. Really? He bought an SUV. Yes, indeed. You know, all of which is to say if the prosecution was hoping to show jurors that this guy did his homework, he did everything to persuade them that he deserved an A. Sue, much of his testimony was quite technical.

He did. He did. Really? He bought an SUV. Yes, indeed. You know, all of which is to say if the prosecution was hoping to show jurors that this guy did his homework, he did everything to persuade them that he deserved an A. Sue, much of his testimony was quite technical.

He did. He did. Really? He bought an SUV. Yes, indeed. You know, all of which is to say if the prosecution was hoping to show jurors that this guy did his homework, he did everything to persuade them that he deserved an A. Sue, much of his testimony was quite technical.

Yeah, he had a huge amount of data to get through and simplify for them. So he began to walk through the timeline he created of what happened that night. He showed a computer model he made using data he collected about how Karen Reid's car moved. He then tested the data with the car he bought that matched Karen's SUV, and he tried to explain why John O'Keefe might have had the injuries he had.

Yeah, he had a huge amount of data to get through and simplify for them. So he began to walk through the timeline he created of what happened that night. He showed a computer model he made using data he collected about how Karen Reid's car moved. He then tested the data with the car he bought that matched Karen's SUV, and he tried to explain why John O'Keefe might have had the injuries he had.

Yeah, he had a huge amount of data to get through and simplify for them. So he began to walk through the timeline he created of what happened that night. He showed a computer model he made using data he collected about how Karen Reid's car moved. He then tested the data with the car he bought that matched Karen's SUV, and he tried to explain why John O'Keefe might have had the injuries he had.

Welcher is himself a similar height and similar weight to O'Keefe. So he said that he acted as him in testing, and we could see videos of him actually standing in front of that SUV, doing some of the testing, wearing clothes similar to what John O'Keefe was wearing that night, right down to the same make of sneakers.

Welcher is himself a similar height and similar weight to O'Keefe. So he said that he acted as him in testing, and we could see videos of him actually standing in front of that SUV, doing some of the testing, wearing clothes similar to what John O'Keefe was wearing that night, right down to the same make of sneakers.

Welcher is himself a similar height and similar weight to O'Keefe. So he said that he acted as him in testing, and we could see videos of him actually standing in front of that SUV, doing some of the testing, wearing clothes similar to what John O'Keefe was wearing that night, right down to the same make of sneakers.

And he covered the taillight in paint, and then he kind of swiveled into it, trying to show where the injuries would be on John O'Keefe's arm. He had a driver back the car into a crash dummy later to show what might have happened, you know, if the car did hit John O'Keefe.

And he covered the taillight in paint, and then he kind of swiveled into it, trying to show where the injuries would be on John O'Keefe's arm. He had a driver back the car into a crash dummy later to show what might have happened, you know, if the car did hit John O'Keefe.

And he covered the taillight in paint, and then he kind of swiveled into it, trying to show where the injuries would be on John O'Keefe's arm. He had a driver back the car into a crash dummy later to show what might have happened, you know, if the car did hit John O'Keefe.