Dr. Judson Welcher, an accident reconstructionist from Aperture LLC who is key to the prosecution's case, took the stand ...

Accident Reconstructionist slide of Dr. Judson Welcher testing a collision between his arm and a Lexus at the Karen Read ...

Karen Read's lawyer Robert Alessi and prosecutor Hank Brennan argued about whether a witness can testify that a collision ...

A crash reconstruction expert has provided jurors his analysis of Karen Read's vehicle the night her boyfriend was killed in ...