Trailer
Cast
David Strathairn
Arthur Spiderwick
Jordy Benattar
Young Lucinda Spiderwick
Joan Plowright
Aunt Lucinda Spiderwick
Andrew McCarthy
Richard Grace
Mariah Inger
Nurse
Freddie Highmore
Jared Grace / Simon Grace
Sarah Bolger
Mallory Grace
Mary-Louise Parker
Helen Grace
Seth Rogen
Hogsqueal (voice)
Tod Fennell
Helen's Co-Worker
Tyler Patrick Jones
Additional Performer
Ron Perlman
Red Cap (voice) (uncredited)
Nick Nolte
Mulgarath
Martin Short
Thimbletack (voice)