Killer Or Cover-Up Murder Trial

For prosecutors, the broken taillight pieces served as proof that Karen Read hit her boyfriend with her SUV and then drove off all while under the influence. State forensic scientist Ashley Vallier went into detail about how she collected and processed a damaged taillight. She testified on the stand: Everything is documented. Days after John O'Keefe died, police had her black Lexus SUV in their custody examining every inch.

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