Meitantei Conan S18E03 - 都市伝説の正体（前編）

A person who murders people with a hammer dubbed "Hammer Man" has be spotted after a murder heading to an apartment. Sato and Takagi stalk out the apartment. After realizing there was no activity in the apartment, they enter the suite and find a man who's hanged himself. They then realize that the man who hanged himself is not the hammer man and that the culprit has impersonated a delivery worker and escaped.