context: Nithya (Shobana) is the deputy commissioner of the city who lives with her Valliyachan (Janardhanan) since both her parents were killed in an accident. She was put on to investigate a corruption case done by the Home Minister and his friend a business man called Rajan Phillip (Cochin Haneefa). Unknowingly she was helped in the investigation by a criminal nicknamed Superman (Jayaram). Superman aka Harikrishnan nurtures a vendetta with the home minister and rajan phillip and uses Nithya to trap his enemies. In the whole process Superman uses Judiciary as his weapon, by providing vital evidences to Nithya at times in order to collect evidences Superman himself breaks the law, but as it is for the greater good it is forgiven by Nithya in the end.
question: Is the way Superman goes about getting evidence legal or not?
answer: Legal