What is "paap"

Paap is a 2003 Bollywood film, directed by Pooja Bhatt in her directorial debut, and features John Abraham, Udita Goswami, Gulshan Grover and Mohan Agashe. Though the film did not fare well at the box office, it received considerable critical acclaim, especially for its cinematography, direction and Mahesh Bhatt's Indianised adaptation of Peter Weir's 1985 English film Witness. The film is also remembered for its soundtrack, which featured numerous Pakistani artists, and also marked the Bollywood debut of singer Rahat Fateh Ali Khan with Mann Ki Lagan, thus setting a trend of Pakistani singers in Bollywood.