Sunday is a 2008 Indian Hindi mystery comedy film directed by Suvidesh Shingade. The film stars Ajay Devgn, Ayesha Takia, Arshad Warsi and Irrfan Khan in lead roles. It is a remake of the 2005 Telugu film Anukokunda Oka Roju.

Plot

The story takes place in the city of Delhi. The film begins when a girl is murdered by an unseen killer. It is learnt that the killer was her fianc� & had acquired evidence about her infidelity. Then, the story shifts to life of Sehar (Ayesha Takia), a voiceover artist. Sehar, who lives alone in a flat, has a friend named Ritu (Anjana Sukhani), who is a fashion designer. Sehar has a rare disorder - her memory blanks out, leaving her clueless about events that took place in a certain time period. Hence, she rarely socialises. But Ritu forcefully takes her to a nightclub.