 Deliberation and 29 days of testimony, a mistrial in the Karen Reed murder trial. Jurors sent two notes to the judge, the first indicating the jury was deadlocked, leading to continued deliberations. But after a second note, the judge thanked jurors for their service and decided a mistrial. Reed is accused of purposely backing into her boyfriend, John O'Keefe, a Boston police officer, with her SUV during a night of drinking in January 2022 and letting him die in a snowstorm. She pleaded not guilty to the charges, including second-degree murder. It's now up to prosecutors to retry the case. Derek Dennis, ABC News.