In his memoir, Michael Caine recalls the chilling impact of Heath Ledger’s Joker, which terrified him on set and forced the cast to step up their game.

Ledger's method acting in The Dark Knight resulted in a breathtaking performance, although it seemed to have taken a toll on his mental health. In his new book Don't Look Back, You'll Trip Over: My Guide to Life (via People ), Caine spoke about his relationship with the late actor. He mentioned his temperament, offering:

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,