The Murder of Roger Ackroyd (Hercule Poirot) - Agatha Christie

Think you know whodunnit? Think again. Poor Roger Ackroyd. He knew the woman he loved had been harbouring guilty secret.

And then, yesterday, she killed herself. But guilty secrets rarely stay secret. Who had been blackmailing her? Had it really driven her to suicide? Sadly, Roger Ackroyd wasn’t going to live long enough to find out .