Our entire nation was in for a rude shock when the Sheena Bora murder case took over all the television sets and every other source of news. The youngster was murdered by her very own mother, Indrani Mukherjea (who always introduced her daughter as her sister to many). From Mahesh Bhatt to Rakhi Sawant – many had spoken about making a film on this spine-chilling real-life story as soon as these reports came out. But the Bangla film fraternity has managed to complete the movie and dish out the trailer the earliest. Named Dark Chocolate, this one features Mahima Chaudhry and Riya Sen in the title roles.