I Know This Much is True (HBO) Movie Poster

I Know This Much is True (HBO)

Mark Ruffalo

as Dominick Birdsey / Thomas Birdsey


Rosie O'Donnell

as Lisa Sheffer

Archie Panjabi

as Dr. Patel

Imogen Poots

as Joy Hanks

Juliette Lewis

as Nedra Frank

Kathryn Hahn

as Dessa Constantine

John Procaccino

as Ray Birdsey

Rob Huebel

as Leo

Michael Greyeyes

as Ralph Drinkwater

Aisling Franciosi

as Young Dessa

Philip Ettinger

as Young Dominick / Young Thomas