Bhavani Iyer started her career with Advertising as a Trainee Copywriter with a leading ad agency, iB&W Advertising. She then moved to journalism and had worked as the editor for the film magazine Stardust. She made her screenwriting debut with Sanjay Leela Bhansali's Black. She has also written the screenplay for Bhansali's Guzaarish, Vikramaditya Motwane's Lootera and the Indian version of Fox's hit show 24 (Indian TV series). She is also working on her novel titled Anon.