New Delhi, July 14 -- From a filmmaker's A-to-Z involvement in production to top-notch performances by a star-studded cast, a great deal of effort goes into making a film. But above all, it's the producers-the backbone of the film industry-who take the biggest risks, often investing large sums of money in the hope that a film will perform well at the box office. While many assume that a bigger budget guarantees success, that's far from the truth. In fact, India's biggest box office flop stands as proof that even popular actors and heavy investment can't always save a film from failure.

India's 'biggest flop' film was The Lady Killer, made on a staggering Rs.45 crore budget.

The film earned only around Rs.60,000 at the box office, report...