The Witness

Jake Gyllenhaal

Rozat 'Rusty' Sabich

Ruth Negga

Barbara Sabich

Bill Camp

Raymond Horgan

O-T Fagbenle

Nico Della Guardia

Chase Infiniti

Jaden Sabich

Elizabeth Marvel

Lorraine Horgan

Nana Mensah

Det. Alana 'Rigo' Rodriguez

Renate Reinsve

Carolyn Polhemus

Peter Sarsgaard

Tommasino 'Tommy' Molto

Lily Rabe

Dr. Liz Rush

Kingston Rumi Southwick

Kyle Sabich

James Hiroyuki Liao

Dr. Herbert Kumagai

Virginia Kull

Eugenia

Matthew Alan

Dalton Caldwell

Tate Birchmore

Michael Caldwell

Noma Dumezweni

Judge Laryn Lyttle

Roberta Bassin

Mrs. Lancaster

Gabby Beans

Mya Winslow

Marco Rodríguez

Brian Ratzer

Brian Cousins

Dr. Harris

Rick Chambers

Anchor

Rasha Goel

Legal Expert

Marcus Parks

Radio Host 1 (voice)

Ed Larson

Radio Host 2 (voice)

Henry Zebrowski

Radio Host 3 (voice)

Brit Prawat

Podcast Host 2 (voice)

Ashley Flowers

Podcast Host 1 (voice)

Mark Harelik

Liam Reynolds (archive footage) (uncredited)