The Murder of Roger Ackroyd - By Agatha Christie

Roger Ackroyd was a man who knew too much. He knew the woman he loved had poisoned her first husband. He knew someone was blackmailing her – and now he knew she had taken her own life with a drug overdose. Soon the evening post would let him know who the mystery blackmailer was. But Ackroyd was dead before he’d finished reading it – stabbed through the neck where he sat in the study.