Detective at Lunch. Murder Served Hot

Reiko Hosho, a wealthy heiress from a noble family, lives a double life. By day, she secretly works as a detective at the Tokyo police department, and by night, she puts on an elegant dress and, accompanied by her personal butler, heads out in a limousine for a luxurious dinner. When the investigation into the murder of a young woman reaches a dead end, Reiko seeks advice from her butler Kagayama, and he, questioning her ability to solve mysteries, takes the investigation into his own hands.