India, Oct. 7 -- When a 22-year-old man went missing from Samalkha village in south Delhi in March 2011, his father as well as police investigators suspected his newly-wed wife and another man of killing him. But with no evidence against the suspects, the man's disappearance remained unsolved all these years.

But on Saturday, the Delhi Police exhumed the remains of the missing man, after the arrests of his wife's partner and his driver. And with that, the police said they cracked the eight-year-old murder case. The woman, however, remains at large.

Over the last eight years, the "killer couple" managed to keep the police at bay by passing a polygraph test and refusing narco-analysis tests before further behavioural examinations confirme...