The Two Photographs - Part 1

A woman's, Sheetal, dead body found on the floor and a mysterious masked man can be seen fleeing the crime scene. Raj has been trying to call Shetal for day now, but her husband informs him that she has gone out of Mumbai. Convinced that her husband, Jagdish, is lying he approaches the CID team. He tells them that Sheetal was in a abusive marriage and wanted to end it and be with Raj. He also informs them that one day they caught a detective following them around, and when CID tracks down this detective they find a photograph of the masked man killing Sheetal. Who was this masked man? Is Jagdish really the killer Or is Raj hiding something?