Adam, a lonely man with Asperger's Syndrome, develops a relationship with his upstairs neighbor, Beth.

Hugh Dancy
as Adam Raki

Rose Byrne
as Beth Buchwald

Peter Gallagher
as Marty Buchwald

Amy Irving
as Rebecca Buchwald

Frankie Faison
as Harlan

Mark Linn-Baker
as Sam Klieber

Haviland Morris
as Lyra

Adam LeFevre
as Mr. Wardlow

Mike Hodge
as Judge

Peter O'Hara
as Williams