Peter Krause Nate Fisher Jr. Actor Rachel Griffiths Brenda Chenowith Actor Richard Jenkins Nathaniel Fisher Sr. Actor Frances Conroy Ruth Fisher Actor Michael C. Hall David Fisher Actor Lauren Ambrose Claire Fisher Actor Freddy Rodríguez Federico Diaz Actor Mathew St. Patrick Keith Charles Actor James Cromwell George Sibley Actor Justina Machado Vanessa Diaz Actor Jeremy Sisto Billy Chenowith Guest Star Tina Holmes Maggie Sibley Guest Star Anne Ramsay Guest Star Jennifer Elise Cox Guest Star Ellen Albertini Dow Guest Star Lisa Banes Guest Star Rosalind Chao Guest Star Matt Malloy Guest Star Julie Brown Guest Star Vanessa Marano Guest Star Nathan Norton Guest Star Sean O'Bryan Guest Star Robert Cicchini Guest Star Scott Paetty Guest Star Berlinda Tolbert Guest Star Gloria Garayua Guest Star Alan Ball Executive Producer