Primate

Johnny Sequoyah

Lucy

Jessica Alexander

Hannah

Troy Kotsur

Adam

Victoria Wyant

Kate

Gia Hunter

Erin

Benjamin Cheng

Nick

Charlie Mann

Drew

Tienne Simon

Brad

Miguel Hernando Torres Umba

Ben

Amina Abdi

Susan

Robin Chalk

Interpreter

Joe Abercrombie

Book Publisher

Nick Romano

Police Officer

Ben Pronsky

Ben (voice) (uncredited)

Rob Delaney

Doc Lambert (uncredited)

Kae Alexander

Mother (uncredited)

Stuart Whelan

Passenger (uncredited)