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.

Scream 4'
"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.

Hot Videos