With filming starting this week in Michigan, the cast of "Scream 4" is falling into place -- and three more stars have been added to the flick.
"The O.C." star Adam Brody, "Planet Terror" star Marley Shelton and "Jericho's" Erik Knudsen have all joined the horror sequel -- which already stars Emma Roberts, Hayden Panettiere and original cast members Neve Campbell, Courteney Cox-Arquette and David Arquette.
Brody will play a cop, Shelton picked up the deputy role that was initially offered to Lake Bell and Knudsen will play a horror fanatic, a la Jamie Kennedy's "Randy" in the first trilogy.
The movie is set to open next April.
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