I haven't been following along, what was the gist of this case?
In a nutshell...
A Boston Police officer named John O'Keefe was found dead outside the home of a fellow Boston Police officer following a night of drinking.
The Prosecution says that O'Keefe was run over by his girlfriend, Karen Read. Police "found" pieces of a broken taillight near the body, they have witnesses that claim they heard a distraught Read say "I hit him" multiple times, and they have voicemails left by Read where she is clearly pretty upset with O'Keefe.
The Defense claims that O'Keefe went into the house where he was involved in some sort of physical altercation, and then his body was dumped on the front lawn. They have experts who claim that O'Keefe's injuries are not consistent with being hit by a car, that O'Keefe had dog bites on his arm, and evidence that someone in the house Googled "How long to die in cold" hours before O'Keefe's body was discovered.
And then on top of that, the whole case was investigated by Massachusetts State Troopers who come across as shady, to put it mildly. There's a Federal Grand Jury that's believed to be looking into the police that conducted the investigation, and the lead investigator was relieved of his duties yesterday, hours after the judge declared a mistrial.