On May 29, 2025, the prosecution rested its case against Karen Read — and not with a whimper, but with a sledgehammer. After weeks of building forensic, digital, and testimonial evidence linking Read to the death of Boston Police Officer John O’Keefe, the Commonwealth ended with a one-two punch: a bulletproof expert and Read’s own words.

Defense attorney Robert Alessi attempted to dismantle the testimony of crash reconstructionist Dr. Judson Welcher — and failed spectacularly. Welcher, who detailed how Read’s Lexus reversed at 74% throttle and left taillight fragments and DNA near O’Keefe’s body, stood unshaken as Alessi tried (and floundered) to poke holes in the data.

Alessi’s aggressive tone did nothing but irritate the court and highlight his lack of traction. His cross-examination was littered with grasping hypotheticals and unsupported accusations. He tried to cast doubt on the tech data, the 3D scans, and even camera angles — only to be reminded that science doesn’t bend to bad theater.

Then, the prosecution dropped the final blow: a 50-second clip of Karen Read herself, questioning aloud if she hit O’Keefe. “What if I clipped him in the knee?” she asks. “Then you’d have some culpability,” her lawyer reportedly told her.

The courtroom fell silent. The jury stared at the screen long after it went black.

This video covers the top 10 moments from Day 23 — and why May 29 may go down as the day this case turned for good. With expert testimony that held firm and the defendant’s own voice suggesting guilt, the prosecution ended on a note that may echo all the way into deliberations.

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