Screenwriter Marc Guggenheim (Green Lantern) is in talks to tackle the scripting duties for Perry Mason, which Robert Downey Jr. is producing and may star in.

We first reported on the project back in October, when Warner Bros. signed on. Marc Guggenheim will work from an original story by Robert Downey Jr. and his Team Downey production partner David Gambino.

The Perry Mason character was created by novelist Erle Stanley Gardner, whose books were adapted into the TV series Perry Mason. The show starred Raymond Burr as the title character, and ran from 1957 to 1966. This new movie will be set in the 1930s, and features characters from the original novels such as Perry Mason's secretary, Della Street, private investigator Paul Drake, and Hamilton Burger, Perry Mason's rival attorney.

Robert Downey Jr. is producing alongside his wife, Susan Downey. Marc Guggenheim used to be a lawyer before launching his writing career. He previously wrote for legal TV dramas such as The Practice, Law & Order, and also created Eli Stone.