Question: What film directed by Don Mancini has the main character of a murderous doll and is the fourth installment in its francise?  
Sentence (from "Bride of Chucky"): The film is written by Don Mancini and directed by Ronny Yu, and stars Jennifer Tilly (who plays and voices the title character Tiffany) and Brad Dourif (who voices Chucky), as well as John Ritter, Katherine Heigl and Nick Stabile.
Relevant evidence: Yes