Sherlock (TV Series) - Season 2 - Episode 1: "A Scandal in Belgravia"

Sherlock Holmes faces off against the cunning Irene Adler, who possesses compromising photos of a royal family member. Tasked by Mycroft, Sherlock and John Watson navigate deception and danger as CIA operatives target Adler. Their encounter reveals Adler's intellect and allure, complicating Sherlock's mission to retrieve the incriminating phone while grappling with his feelings for her.