From Wikipedia:
Andreja Pejić (born Andrej Pejić; on 28 August 1991) is an Australian actress and former model. Since coming out as a trans woman in 2013, she has become one of the most recognisable transgender models in the world.
A boastful girl at a Halloween party tells Mrs. Oliver that she once witnessed a murder; the same girl later drowns in an apple-fishing bucket, and Poirot must solve a two-pronged mystery: who killed the girl and what, if anything, did he witness?
