Londoner Ronnie embarks on a journey to India when his mother, Suleka, goes missing and mysteriously ends up in a Kolkata hospital. Before Ronnie can unravel the mystery of what brought his mother back to her homeland, Suleka dies in an apparent cult killing. Further deaths point to a series of past murders that stopped 28 years ago when Suleka left India with her infant son. Until now.<br />　　As the darkness within Ronnie grows and the murders reach their peak, all roads lead to the feared witch of Kolkata's insane asylum.