Chetan Bhagat (born 22 April 1974) is an Indian English language author. He is the author of three bestsellers: Five Point Someone - What not to do at IIT, One Night @ the Call Center, The Three Mistakes of My Life. He is also the scriptwriter for 'Hello', the Bollywood movie based on One Night @ the Call Center.After eleven years in Hong Kong, the author relocated to Mumbai in 2008, where he works as an investment banker.

His first book, Five Point Someone - What not to do at IIT (May 2004) is a novel about three boys who join IIT Delhi and try to cope with the notoriously heavy workload of the institute. This book has continued to stay on the India Today bestseller list ever since its publication (190 weeks in January 2008). It won him the Society Young Achiever's award in 2004 and the Publisher's Recognition award in 2005. Rajkumar Hirani in his new film is taking the script of Five Point Someone with Aamir Khan in the lead role.

His second book, One Night @ the Call Center, was released in
India in October 2005 and continues to be a bestseller as of January 2008. The book is about six people who work at a Call Center and one night which changes it all for them. The book was made into a big budget Bollywood film called Hello starring Salman Khan, Katrina Kaif, Sharman Joshi, Gul Panag among others.

His third book, The Three Mistakes of My Life was released in May 2008.About the Book - ""In late-2000, a young boy in Ahmedabad called Govind Patel dreamt of having a business. To accommodate his friends Ish and Omi's passion, they open a cricket shop. Govind's wants to make money and thinks big. Ish is all about nurturing Ali, the batsman with a rare gift. Omi knows his limited capabiltiies and just wants to be with his friends. However, nothing comes easy in a turbulent city. To realize their goals, they will have to face it all - religious politics, earthquakes, riots, unacceptable love and above all, their own mistakes.""

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