Robert De Niro and Edward Norton will star in director John Curran's Stone , reports Production Weekly .
The movie will be based on a play by Junebug screenwriter Angus MacLachlan. De Niro will play a parole officer who develops a friendship with a teaching assistant. Filming begins in May.
Curran, whose credits include The Painted Veil and We Don't Live Here Anymore , will also direct Keira Knightley in The Beautiful and the Damned .