Nicholas Griep

as Christopher John Francis Boone

Jeremy Urann

as Ed Boone

Abbey Crawford

as Judy Boone

Brianne Smith

as Siobhan

Suzanne Maguire

as Voice One / Mrs. Shears / Ensemble

Charles Fletcher

as Voice Two / Roger Shears / Ensemble

Dallan Starks

as Voice Three / Policeman / Ensemble

Jerry Sciarrio

as Voice Four / Rev. Peters / Ensemble

Elizabeth Martin

as Voice Five / No. 40 / Ensemble

Robbi Starnegg

as Voice Six / Mrs. Alexander / Ensemble