Welcome to the murderous party File 2 / Here's a message from the dead File 1 (S01E02)

Kageyama, the enigmatic butler, devises a unique scheme to unmask the elusive criminal hiding within a lavish hotel. Meanwhile, Reiko and her companions come to terms with the intricate layers of their own feelings. As Reiko delves into the murder of a wealthy real estate mogul, she discovers that each family member has a motive that raises eyebrows. However, one pivotal photograph emerges as a key piece of evidence, significantly propelling this baffling case forward.