Martian Child

John Cusack

David

Bobby Coleman

Dennis

Amanda Peet

Harlee

Sophie Okonedo

Sophie

Joan Cusack

Liz

Oliver Platt

Jeff

Richard Schiff

Lefkowitz

Taya Calicetto

Esther

David Kaye

Andy

Braxton Bonneville

Nicholas

Samuel Charles

Jonas

Zak Ludwig

Young David

Samuel Patrick Chu

Boy at Group Home

Ryan Morrissette

Boy at Group Home

Nimet Kanji

Housekeeper