Karen Read case: Attorneys revisit what jurors said (and didn't say) in mistrial

Catch up quick: Read's attorneys want the Supreme Judicial Court to dismiss two charges against her — second-degree murder and leaving the scene of a fatal crash — in the death of her boyfriend, Boston police officer John O'Keefe.

• Read's attorneys argue that trying her again amounts to double jeopardy, after four jurors told them the jury agreed to acquit her of those two charges but disagreed on the manslaughter charge against her. 
• They argue the judge failed to poll the jurors on each specific count.

The ACLU of Massachusetts has weighed in, siding with the defense. 

• "The trial court had a clear path to avoid an erroneous mistrial: simply ask the jurors to confirm whether a verdict had been reached on any count," the brief states. 

The latest: Prosecutors submitted a 77-page legal filing Wednesday night arguing Read was never acquitted and should be tried in January, NBC Boston reported. 

Zoom in: Prosecutors say the judge was reasonable in declaring a mistrial and that defense attorneys didn't object to the declaration.

• They also note the jury never told the judge they agreed on any charge and said it was "hopelessly deadlocked."

What they're saying: "At no point did the jury express the prospect of unanimity on any charge, and the defendant argued at the time that the jurors were 'at an impasse.'"

What's next: The SJC is set to hear arguments on Nov. 6, per NBC Boston. 

• If the defense's efforts to get the case dropped fails, Read's new trial will start in January.