Jeremy Davies
— Charles Manson
Clea DuVall
— Linda Kasabian
Allison Smith
— Patricia 'Katie' Krenwinkle
Mary Lynn Rajskub
— Lynette 'Squeaky' Fromme
Marguerite Moreau
— Susan 'Sadie' Atkins
Eric Dane
— Charles "Tex" Watson
Michael Weston
— Bobby Beausoleil
Hal Ozsan
— Joey Dimarco
Rick Gomez
— Milio
Robert Joy
— Detective Morrisy
Graham Beckel
— Jerry
Chris Ellis
— Sgt. Whiteley
Isabella Hofmann
— Rosemary LaBianca
Robert Costanzo
— Leno LaBianca
Yvonne Delarosa
— Catherine 'Gypsy' Share
Cheselka Leigh
— Kathryn 'Kitty' Lutesinger
John Pleshette
— Mr. Krenwinkle
Whitney Dylan
— Sharon Tate
Susan Ruttan
— Mrs. Kasabian
Bruno Kirby
— Vincent Bugliosi
Catherine Wadkins
— Leslie Van Houten
Kai Lennox
— Steve 'Clem' Grogan
Hopwood DePree
— Paul Watkins
Nick Jameson
— Gary Fleishman
Kirk B.R. Woller
— Detective Kleinman
Robert Pine
— Judge Keene
Wolf Muser
— Chief Davis
Marek Probosz
— Roman Polanski
Elizabeth Ann Bennett
— Abigail Folger
George Tasudis
— Voytek Frykowski