Maddam Sir's Duplicate?

When Billu asks Maddam Sir to return his money that she had borrowed the previous day, Haseena is confused as she can't recollect taking any money from him. Later, a man walks into the police station and claims to have met her earlier, whereas Haseena can't seem to recall this person by any means. Is there someone else in town who is fooling around as Maddam Sir? Watch the mystery get solved here.