电影《心字已成灰》讲述John Muller, a once promising medical student turned skilled criminal, concocts a plan for a heist that takes an unexpected turn when he attracts the wrath of a ruthless gambler named Rocky Stansyck. Desperate and with nowhere to turn, Muller seizes a fortunate opportunity to adopt a completely secure new persona as psychiatrist Victor Bartok. However, the twist of fate lands Muller in an even more perilous situation, revealing that his life may not be as secure as he initially thought.影评：这部影片以医学院辍学生兼精明犯罪分子约翰•穆勒为中心，讲述了他在一次抢劫中意外引来报复心强的赌徒洛基•斯坦西克的故事。在走投无路之际，穆勒偶然发现了一个幸运的机会，能够扮演一位名叫维克多•巴托克的心理医生，拥有坚不可摧的新身份。然而，讽刺的是，穆勒发现自己从火坑中跳进了火海，生活并没有想象中的安全无忧。