‘The Tomb’ has added rapper 50 Cent, Vincent D’Onofrio and Amy Ryan to its cast.The trio will join lead actors Arnold Schwarzenegger, Sylvester Stallone and Jim Caviezel in the action film, as well as the previously confirmed Vinnie Jones.Stallone will portray Ray Breslin, a world authority on structural security, who must escape from a maximum security prison of his own design. Ryan will play the character’s business partner, D’Onofrio a business director and Jones a prison guard, Variety reports.Schwarzenegger, who rejoined the project in February, will appear as a heroic prisoner who rallies the other convicts in their darkest hour. 50 Cent’s role is yet to be confirmed.BBC.