The Third Floor Flat (S01E05)

In this intriguing episode, Poirot stumbles upon a murder within his own apartment building. He delves into the lives of his lively neighbors and investigates peculiar sounds emanating from the lift shaft during the night. As he navigates through the complexities of the case, Poirot unravels a web of secrets and motives hidden behind the façade of everyday life in the flat.