 SPOILER: When working on the script, Farhan Akhtar (qv) kept the  original _Don (1978)_ (qv) script by Salim Khan (I) (qv) and  Javed Akhtar (I) (qv) intact, but himself rewrote the opening and  closing scenes. He did this to bring originality to his version of  _Don (1978)_ (qv). Thus, the Don survives and escapes at the end, to  live for a sequel.