Jason Clarke character Ted Kennedy
Kate Mara character Mary Jo Kopechne
Ed Helms character Joe Gargan
Bruce Dern character Joe Kennedy
Taylor Nichols character Ted Sorensen
Lexie Roth character Nance Lyons
Andria Blackman character Joan Kennedy
David De Beck character Sargent Shriver
Olivia Thirlby character Rachel Schiff
Clancy Brown character Robert McNamara
Damien Di Paola character Larosa
Matthew Lawler character Dun Gifford
Bob Jaffe character Reporter #2
Bill Mootos character Older Reporter
Sigrid Lium character Senate Staffer (uncredited)
Susan Garibotto character Senate Staffer (uncredited)
Jim Gaffigan character Paul Markham
John Fiore character Chief Arena
Marinko Radakovic character Reporter
Alison Wachtler character Liz Trotta
Angela Hope Smith character Maryellen Lyons
Dustin Tucker character Senatorial Aide
Vincent Tycer character David Burke
Victor Warren character Stephen Smith
Thomas Kee character Walter Steele
Noah Carpenter character Teddy Jr.
Donald Watson character Dr. Watt
Charlotte Dore character Gwen Kopechne
Tim Jackson character Joseph Kopechne
Walter Driscoll character Dr. Mills
Bill Humphreys character Reston
Joe Chase character Farrar
Joseph Zamparelli character Officer Look
Sarah Elizabeth Mitchell character Senate Secretary
Michael Balzano III character US Senator (uncredited)
Paul Bellefeuille character Dike House Resident (uncredited)
Joe Cali character Reporter (uncredited)
Jesse Christensen character Reporter (uncredited)
Rob DiNinni character Reporter #4 (uncredited)
Stephen F Feeley character Funeral guest / mourner (uncredited)
William Galatis character Shiretown Inn Guest (uncredited)
John Hawe character Stephen Sorenson (uncredited)
Bobby Kenney character Investigative News Reporter (uncredited)
Dov Kling-Levine character Protester / Local (uncredited)
Jimmy Malcolm character News Photographer (uncredited)
Jason Mulcahy character Reporter (uncredited)
Ed O'Keefe character Funeral Priest (uncredited)
Anthony Pelton character Plymouth Pennsylvania Polic Officer (uncredited)
Bill Porter character Investigative News Reporter (uncredited)
Carrie Ann Quinn character RMV Attendant (uncredited)
Anne Reardon character Mourner (uncredited)
Harold Rudolph character Funeral attendee (uncredited)
John Sarnie character Mourner (uncredited)
Jeff Savage character John Culver (uncredited)
Paul Taft character Vineyard Gazette Photographer (uncredited)
Gary Tanguay character TV Interviewer
Gillian Mariner Gordon character Cricket
Katie Henoch character Suzy
Barry Press character Burke Marshall
Beth Petrou character Ann Gargan
