“ Monster,” a courtroom drama starring Kelvin Harrison Jr., Jeffrey Wright, Jennifer Hudson and Jennifer Ehle that's premiering Friday on Netflix isn’t actually new at all.Yes, it’s adapted from an acclaimed book by the trailblazing author Walter Dean Myers about a Black teen who is in prison for the possible murder of a Harlem drugstore owner. It premiered at the Sundance Film Festival in January of 2018 and has been sitting on various shelves since.