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Police identify a decapitated body as a missing reporter and trace calls to a suspect who makes an unsettling confession — but there's more to his story.

Names written in Ram Niranjan's diary suggest a grim pattern. As experts discuss his potential motives for murder, he shares his own side of the story.

Insider accounts of Ram Niranjan's behavior in jail, plus a closer look at his history, point to his delusions and desires around reality and power.