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

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

Read's defense attorney questioned crash reconstruction expert Judson Welcher, one of the prosecution's key witnesses, without the jury present to determine his competency to testify and the ...

Read is accused of striking John O’Keefe, her Boston police officer boyfriend, with her Lexus SUV and leaving him to die ...