Clare Kilner Director Mandy Moore Halley Martin Actor Allison Janney Lydia Martin Actor Trent Ford Macon Actor Alexandra Holden Scarlett Actor Dylan Baker Steve Actor Nina Foch Grandma Halley Actor Mackenzie Astin Lewis Actor Connie Ray Marion Actor Mary Catherine Garrison Ashley Martin Actor Sonja Smits Carol Warsher Actor Peter Gallagher Len Martin Actor Laura Catalano Lorna Queen Actor John White Michael Sherwood Actor Neena Beber Screenwriter Sarah Dessen Writer William Teitler Producer Erica Huggins Producer Ted Field Executive Producer Scott Kroopf Executive Producer Chris Van Allsburg Executive Producer David Linde Executive Producer Eric Alan Edwards Cinematographer Janice Hampton Film Editing David Kitay Original Music Dan Davis Production Design Andrew M. Stearn Art Director Carolyn "Cal" Loucks Set Decoration Alexandra Welker Costume Design