An August trial date has been set for a woman charged with murder along with two men. The three are accused of killing her ex-boyfriend's new girlfriend in Warren.Judge Jennifer Faunce of Macomb County Circuit Court scheduled an Aug. 22 trial for Marcie T. Griffin, 47, of Eastpointe, for the shooting death of Julii Larrie Johnson, 34, of Oak Park, in January 2017, outside Griffin's ex-boyfriend's home near 12 Mile and Mound roads.