In his new memoir, Don’t Look Back, You’ll Trip Over: My Guide to Life, the veteran actor opened up about working with his late co-star on the Christopher Nolan-directed film and the grief he experienced after his death in January 2008 at 28 years old.

Caine explained that once hair and makeup were complete, Ledger's take on the Joker was "chilling" to see. "The smeared makeup, the weird hair, the strange voice. It was chilling.

In his memoir, Michael Caine shares his chilling experience of witnessing Heath Ledger's transformation into the Joker in The Dark Knight, reflecting on the late actor's extraordinary talent and its impact on the film industry.