Karen Read ‘s second trial in connection with the death of her boyfriend, Boston police officer John O’Keefe, continues on Tuesday in Dedham’s Norfolk Superior Court before Judge Beverly Cannone.

Karen Read pleaded not guilty to murder charges in the death of Boston police officer John O’Keefe and is facing a retrial after a jury was unable to reach a verdict last year.

Paul Gallagher told prosecutor Hank Brennan on redirect that he had no information to suggest anyone had changed the angle on the deputy chief’s front porch camera.