A year after the actor’s death, a generative AI version of Val Kilmer will co-star in an independent film, in one of the boldest uses yet of artificial intelligence in moviemaking. First Line Films announced Wednesday that Kilmer has posthumously joined the cast of a film titled “As Deep as the Grave.” The producers said that, before his death, Kilmer had signed on to perform in the movie but was unable to because of his health. Kilmer’s estate gave permission for his digital replication, and is being compensated for it. Mercedes Kilmer, the actor’s daughter, said the role resonated with...