Why do artists keep returning to William Shakespeare? His plays – rife with explorations of deep humanity and emotion – provide not just a framework for hanging many different worlds upon his words, but also the kind of complex characters and twisted tales that actors and filmmakers crave, whether tragedy, romance or comedy. The latest movie adaptation of an iconic Shakespeare play is “Hamlet,” directed by Aneil Karia, which sees Riz Ahmed star as the prodigal prince, mourning the death of his father.