Evie Pierpont (Shailene Woodley) is the hidden main villainess of "A Daze of Wine and Roaches," episode 3.19 of CSI: NY (airdate March 21, 2007).
Evie was introduced as a wealthy 15-year-old girl and the heiress to her family's drug company. The beginning of the episode showed her at her latest fundraiser, which took place at the Consulate General of France in Manhattan. The French Revolution was its theme, and Evie took her French tutor Simone DeLille to a mock guillotine before releasing the faux blade to fall onto her, after which the latter (who suddenly felt ill) mysteriously died. The guilt-ridden former expressed sorrow over the thought that she had killed her, only for Stella Bonasera to state that Simone's death wasn't her fault, and it was later uncovered that she was poisoned.
Stella's second encounter with Evie had the detective comforting the teenager once again, as she shed tears over what happened to her tutor and friend. However, Stella performed a test on Evie's tears, and it was revealed that they lacked emotion—meaning that she was faking sorrow. The episode's progression revealed that Simone had unintentionally killed her boyfriend Charlie Cooper after she thought he was blackmailing her regarding her expired work visa, which he knew about. Furthermore, Luther Vandeross (the Pierponts' lawyer) poisoned Simone with chocolate laced with an experimental cancer drug after she blackmailed him for a percentage of the money he was embezzling from Evie's parents, which he put in an account in her name in order to frame her; he was attempting to exploit Simone's strong desire to stay in the United States in order to benefit himself. However, at the end of the episode, it was confirmed that everything had occurred because of Evie's masterful manipulation of people.
A final series of flashbacks exposed her as a sociopath whose motives were unknown, and a sample of her handwriting proved that she was the one who wrote the blackmail note to Simone, leading to Charlie's accidental murder after his girlfriend suspected him of being the writer. In addition, the evil Evie informed her French tutor about Luther's actions—indicating that she pulled the proverbial strings that culminated in her family's lawyer killing her in order to keep his greedy secret hidden. Though Stella was able to deduce the villainess' role, she added that she couldn't be charged due to the fact that there was no concrete evidence against her, allowing for the fiendish adolescent to go unpunished.