R.J. Cutler Director Chloë Grace Moretz Mia Hall Actor Mireille Enos Kat Actor Jamie Blackley Adam Actor Joshua Leonard Denny Actor Liana Liberato Kim Actor Stacy Keach Gramps Actor Gabrielle Rose Gran Actor Jakob Davies Teddy Actor Willa Milner Liz Actor Aisha Hinds Nurse Ramirez Actor Gabrielle Cerys Haslett Young Mia Actor Lauren Lee Smith Willow Actor Adam Solomonian Henry Actor John Emmet Tracy Surgeon Actor Chelah Horsdal Liddy Actor Shauna Cross Screenwriter Alison Greenspan Producer Denise Di Novi Executive Producer Brad Van Arragon Executive Producer Gayle Forman Executive Producer John de Borman Cinematographer Brent Thomas Production Design Keith Henderson Film Editing Monique Prudhomme Costume Design Heitor Pereira Original Music Ronna Cress Casting Roxanne Methot Art Director Louise Roper Set Decoration