S1·E814 The Actress Blogger's Locked Room Case (1)

Professor Agasa takes the Detective Boys to a cake buffet in a hotel, where they meet Saya Kitami and Kyona Shono, two rival actresses who are filming a drama. Kyona asks Saya if she's seen her blog and warns her that she should surrender if she doesn't want to have her secret exposed. Conan checks Kyona's blog but is unable to determine what the secret is. Later, Kyona is found murdered in her locked hotel room.