In “Deathly Hallows Part I,” Harry, Ron and Hermione (played by Daniel Radcliffe, Rupert Grint, and Emma Watson, respectively) are tasked with destroying what are known as horcruxes—objects that house the fragmented soul of the series’ main villain, Lord Voldemort. Once they complete the task, Voldemort can finally be vanquished and everyone can live happily ever after. The Chronicle’s film critic, Drew Hunt, reviews the film.