Scott McGehee, David Siegel	...	(Director)
Nancy Doyne, Carroll Cartwright, Henry James	...	(Writer)
Julianne Moore	...	Susanna
Steve Coogan	...	Beale
Alexander Skarsgård	...	Lincoln
Joanna Vanderham	...	Margo
Onata Aprile	...	Maisie
Sadie Rae	...	Zoe
Jesse Stone Spadaccini	...	Martin
Diana García	...	Cecelia (as Diana Garcia Soto)
Amelia Campbell	...	Ms. Baine
Maddie Corman	...	Ms. Fairchild-Tettenbaum
Paddy Croft	...	Mrs. Wix
Trevor Long	...	Musician #1
Emma Holzer	...	Holly
Nadia Gan	...	Hostess
Samantha Buck	...	Zoe's Mother
Nick Urata	...	Composer
Giles Nuttgens	...	Cinematographer
Madeleine Gavin	...	Editor

Summary: What Maisie Knew is a contemporary New York City revisioning of the Henry James novel by the same name. It revolves around unwitting 7-year-old Maisie, caught in the middle of a custody battle between her mother Susanna, an aging rock star, and her father, Beale, a major art dealer.