Michael Fleming at Variety uncovers some interesting details. Robert DeNiro is joining Mel Gibson in a Martin Campbell-directed movie entitled Edge of Darkness. The film is reportedly about a Boston homicide detective, played by Gibson, who becomes embroiled in the aftermath of a terrible personal tragedy involving his 24-year-old daughter. The film evidently involves murder, corporate cover-ups and other shenanigans, with DeNiro playing some kind of Machiavellian "cleaner" or something.
This will be the first film to have Gibson star since the 2002 film Signs.
Read the full details, including what I consider to be fairly major spoilers, at your own risk: