New Delhi, Oct 12 (ANI): Bollywood's Mr. Perfectionist Aamir Khan made it big with his cousin Mansoor Khan's debut film Qayamat Se Qayamat Tak and the actor returned the favour by launching his debut book 'The third Curve' in New Delhi. Mansoor, son of late filmmaker Nasir Hussain, has himself directed four films- Qayamat Se Qayamat Tak, Jo Jeeta Wohi Sikander, Akele Hum Akele Tum and Josh. But his book 'The Third Curve' has nothing to do with cinema.