LOS ANGELES, Calif. -- Robert Downey Jr. is still a few months away from hitting the theaters as 'Sherlock Holmes,' but a sequel for the super sleuth is already reportedly in the works - and this time, he might be chasing Brad Pitt.While there is no deal in place yet, Pitt has been in talks with producers to play Holmes' nemesis Moriarty in the next installment, according to The Hollywood Reporter.