Baywatch (1989)

S8E19 Diabolique

Mitch saves a distressed young woman, Sara, from her burning boat. Grateful for his help, she manages to charm him and convinces his mother, Irene, to employ her as a nanny for Neely's baby, Ashley. However, Mitch grows uneasy as Sara's infatuation with him intensifies, leading her to pursue him relentlessly. When Mitch tries to distance himself, Sara reveals her true nature, scheming to turn his life into a living nightmare.