Kevin Bacon, Chris Colfer and John C. Reilly have been added to the performance of “8,” Dustin Lance Black’s play about the Prop 8 trial that will be staged at the Wilshire Ebell Theatre in Los Angeles on March 3.

The event is a benefit organized by the American Foundation for Equal Rights, the org of entertainment and political activists pursuing the case in federal court, and Broadway Impact, the nonprofit set up to mobilize the theater community in support of same-sex marriage equality.

Reilly will play U.S. District Judge Vaughn Walker, who ruled that Proposition 8 was unconstitutional; Bacon will play Charles Cooper, the attorney for supporters of the initiative; and Colfer will play Ryan Kendall, a witness who testified about the harmful effects of “reparative therapy.”

Others in the cast include George Clooney and Martin Sheen as David Boies and Ted Olson, respectively, the lead counsels for the plaintiffs in the case. Rob Reiner is directing, and has a role in the play.