Kaun Hai? S01 E28 Servants of Lord Maarkaadev Part - 1

Swami Meghanand is involved in a sinister ritual where he hands over young women to an evil spirit as a sacrifice to the deity Lord Maarkaadev. But Meghanand faces the spirit's wrath when he fails to capture a woman named Radhika for the ritual. Who is she? What is the spirit's intention behind singling her out for the ritual?