Third Girl

Norma Restarick, a young woman sharing a London flat with two other women, visits Hercule Poirot, claiming she might have committed a murder. However, she abruptly leaves, expressing doubt about Poirot's capabilities due to his age. Intrigued, Poirot, with the assistance of his friend, mystery novelist Ariadne Oliver, delves into Norma's life. As they investigate, they uncover a complex web of secrets, including family tensions, identity confusion, and psychological manipulation. The case challenges Poirot to distinguish between reality and deception to uncover the truth.