J.K. Simmons as Henry Sawyer

Lou Taylor Pucci as Gabriel Sawyer

Julia Ormond as Dianne Daley

Cara Seymour as Helen Sawyer

Mía Maestro as Celia

Tammy Blanchard as Tamara

Scott Adsit as Dr. Biscow

James Urbaniak as Mike Tappin

Max Antisell as Young Gabriel

Peggy Gormley as Florence

Ryan Karels as Bernie

Josh Segarra as Mark Ferris

Xander Johnson as Weed

Jesse Roche as Steve

Erica Fae as College Representative

Matthew J. McCarthy as Carl

Rashad Edwards as Police Officer

Wade Mylius as Activist

James Eason as Hippie Vendor

Rich Campbell as Bob Weir

Buzz Roddy as Bill Kreutzmann

Mark Greenberg as Mickey Hart

Martin Moran as Minister