Generate a question about the following movie plot: In 2006, the illegal drug trade based in Kuala Lumpur is booming. The Malaysian authorities are called upon for assistance by their Indian counterparts. The Indian team sent to Kuala Lumpur is headed by Deputy Commissioner of Police De Silva (Boman Irani), who targets the illegal drug operations of Singhania (Rajesh Khattar). Helping him along the way is Inspector Vishal Malik (Om Puri), an Indian officer from Interpol. Both of them know that in order to put an end to the illegal drug trade, they must capture "Don" (Shah Rukh Khan) who manages Singhania's business in Kuala Lumpur. Singhania was one of the two closest and most trusted men of Boris, a criminal who went underground and was presumed dead by the police. Boris's other lieutenant was a man called Vardhan, equally ruthless as Singhania, but his whereabouts are unknown. De Silva explains that Singhania had killed Vardhan upon learning that Boris was about to hand over his drug business to Vardhan. Singhania's subordinate, Don, is known for murdering one of his close associates, Ramesh (Diwakar Pundir), who had attempted to leave the cartel. Ramesh's future wife Kamini (Kareena Kapoor) decides to help the police arrest Don but in the process she is also killed. Now, Ramesh's sister Roma (Priyanka Chopra) plans to avenge her brother and his fiance. She manages to infiltrate Don's gang. Don and his inner circle, which consists of Anita (Isha Koppikar) and Narang (Pawan Malhotra), travel to India for a cocaine transaction. An Indian police team led by De Silva follow them there and capture Don, who is fatally injured while trying to flee from the police. De Silva keeps this a secret from the department and media as he decides to track down an exact look-alike of Don named Vijay (Shah Rukh Khan) from Mumbai, asking Vijay to pose as Don so the police can get to Singhania. Vijay agrees when De Silva promises to admit Deepu (Tanay Chheda), a kid Vijay looks after, to a school in Kuala Lumpur. Meanwhile, Jasjit (Arjun Rampal), Deepu's father, has just been...
The answer to this question is:
Who returned as DON when original DON died?