Cathasaigh Ó Fiannachta, also known as Casey Zilbert or Casey Whelan, is a New Zealand screenwriter and film director of Irish origin.
[1][2] Zilbert was born in Wellington to Irish parents and spent her childhood in a variety of locations including Egypt and Nigeria.
She attended the United World College of South East Asia in Singapore, completing the International Baccalaureate programme, before returning to New Zealand.
[3] She completed a degree in film and English at the University of Auckland, and then worked in the script department of the television soap opera Shortland Street for three years.
[1] She co-wrote the movie Born to Dance (2015), and wrote and directed the comedy Hang Time (2019).