Case Closed (Detective Conan) - Season 1 Episode 431

Mōri, Ran, and Conan are at a café when they run into Takagi who is aiming to pick up girls. Meanwhile, he finds Sato there doing the same. After a tense date with two strangers, Conan realizes from the conversation that a boy home alone is in danger. When they arrive at their house, the boy has been kidnapped. The kidnapper leaves an email demanding money.