As well as the principal actors, this is a movie rich in bench strength: Anthony Edwards as Toschi's more sensitive partner; Brian Cox as the celebrity lawyer Melvin Belli; Chloë Sevigny as Graysmith's frightened wife; and Elias Koteas, Dermot Mulroney and Donal Logue as county cops; Philip Baker Hall as a dipsomaniac handwriting expert; and, notably, John Carroll Lynch, a portly, bald comic actor (seen in Albert Brooks's Looking for Comedy in the Muslim World) cast here as the prime suspect.