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.

In his memoir, Michael Caine recalls Heath Ledger's incredible transformation into the Joker in 'The Dark Knight', which left the cast in awe and raised their performances. Ledger, who posthumously won the Oscar for Best Supporting Actor,

Michael Caine writes in his new memoir, “Don't Look Back, You'll Trip Over: My Guide to Life,” that he was actually “terrified” of Heath Ledger on the set of Christopher Nolan’s “The Dark Knight” (via NME).