Jennifer McCabe is a key witness in the murder trial of Karen Read, who is accused of causing the death of her boyfriend, Boston police officer John O'Keefe, in January 2022. McCabe is Brian Albert's sister-in-law; Brian Albert lived at 34 Fairview Road in Canton, Massachusetts, where O'Keefe's body was found. McCabe describes herself as a typical small-town mother of four daughters and was present during critical moments on the night of O'Keefe's death, including a gathering at a local bar, an after-party at her sister's home, and the search for O'Keefe the next morning when his body was discovered on her sister's lawn

. She testified that she was with Karen Read on the night in question and was the last known person to communicate with O'Keefe apart from Read. McCabe recounted seeing Read's "hysterical" and "erratic" behavior and testified that Read admitted to hitting O'Keefe with her vehicle, saying "I hit him, I hit him, I hit him" near the scene

. Her testimony has been pivotal for the prosecution, providing a firsthand account of events and Read's demeanor, while the defense has challenged her reliability and suggested she may be part of a conspiracy to frame Read

. McCabe's involvement also includes a notable Google search about how long it takes for someone to die in the cold, which prosecutors argue was done at Read's request, adding to the case's complexity

. The defense has scrutinized her testimony extensively, questioning her interactions with law enforcement and suggesting possible collusion with family members, which McCabe denies

. In summary, Jennifer McCabe is a central eyewitness in the Karen Read trial, closely connected to the events surrounding John O'Keefe's death and providing crucial testimony that has significant implications for both the prosecution and defense