Cillian Murphy appears in Christopher Nolan's acclaimed Dark Knight Trilogy, portraying the character of Dr. Jonathan Crane, also known as Scarecrow. In Batman Begins, Scarecrow is a fear-inducing villain who uses a potent hallucinogenic drug to manipulate his victims. He continues to play a significant role in The Dark Knight and The Dark Knight Rises, contributing to the overall narrative and adding depth to the Batman universe. Cillian Murphy's portrayal of Scarecrow showcases his ability to bring a sense of menace and intensity to the screen.