Kalo Chhaya (Dark Shadows) is a Bengali suspense thriller film directed by Premendra Mitra and produced by Gouranga Prasad Basu.
[3][4] A lady visited Mr. Surajit Roy, a detective, with a proposal to steal a will from a landlord's house.
Soon after, he received a telegram from one Rajib Lochan Choudhury, zamindar of a remote village in Murshidabad district.
He saw a nurse, Anima, appointed for Rajib Lochan and recalled that this lady went to him with the proposal of theft .
Finally Surajit was successful to track down the real culprit.