Mrs McGinty’s Dead by Agatha Christie

A charwoman is brutally murdered, and a lodger is quickly convicted of the crime. However, Superintendent Spence suspects the case is not as simple as it seems and calls upon Hercule Poirot to investigate. As Poirot digs deeper, he uncovers connections to past crimes and hidden identities, revealing that the truth is far more complex—and dangerous—than anyone imagined.