Cumberbatch may play con artiste 

Benedict Cumberbatch is in negotiations to play a con artist in "Man in the Rockefeller Suit". Based on Mark Seal's book, the story follows Christian Karl Gerhartsreiter, an imposter who conned his way into various jobs on Wall Street -- as well as a marriage -- by posing as a member of the Rockefeller family.

David Bar Katz will write the adapted screenplay based on Seal's book by the same name, while Donald De Line will produce the film. The director of the film has not been decided yet.