Ryan Gosling as David Marks

Kirsten Dunst as Katie Marks

Frank Langella as Sanford Marks

Lily Rabe as Deborah Lehrman

Philip Baker Hall as Malvern Bump

Michael Esper as Daniel Marks

Diane Venora as Janice Rizzo

Nick Offerman as Jim McCarthy

Kristen Wiig as Lauren Fleck

Stephen Kunken as Todd Fleck

John Cullum as Richard Panatierre

Maggie Kiley as Mary McCarthy

Liz Stauber as Sharon McCarthy

Marion McCorry as Ann McCarthy

Mia Dillon as Katie's Aunt

Tom Kemp as Katie's Uncle

Trini Alvarado as Sarah Davis

Tom Riis Farrell as Barry Davis

Bruce Norris as Brian Callender

Francie Swift as Kelly Callender

David Margulies as Mayor

Glenn Fleshler as Sidney Greenhaus

Stephen Singer as Solly Sachs

Francis Guinan as Daniel Patrick Moynihan

Ellen Sexton as Moynihan's Wife

William Jackson Harper as Moynihan's Assistant

Ashlie Atkinson as Bonnie Felder

Donna Bullock as Divorce Attorney

Pamala Tyson as Lula Baxter

Julie Moran as Julie Moran

Diane Kagan as Scream Therapist

Socorro Santiago as Nurse

Barbara Ann Davison as Woman at Baby Shower

Zabryna Guevara as Waitress

Lanny Flaherty as Rooming House Landlord

Robert Clohessy as Building Superintendent

Lázaro Pérez as Building Elevator Operator

Michelle Hurst as Newscaster

Craig Walker as Assistant District Attorney

Lola Pashalinski as Woman at Luxor

Jerry Grayson as Man at Luxor

Tony Torn as Theater Manager

Zoe Lister-Jones as Press Conference Reporter

Tristan Comeau as Young David

Amelia Martin as David's Mother

Matthew Floyd Miller as Young Sanford

Peter Becerra as Officer at Search

Mary A. Kelly as Vermont Realtor

Jeong Kim as Waiter at Disco

Andy Tsay as Waiter

Ruel Jusi as Butler

Arwen as Ivan the Dog