A Suitable Vengeance — Elizabeth George

Inspector Thomas Lynley, the eighth earl of Asherton, has brought to Howenstow, his family home, the young woman he has asked to be his bride. But the savage murder of a local journalist is the catalyst for a lethal series of events that shatters the calm of a picturesque Cornwall village and embroils Lynley and forensic scientist Simon Allcourt-St. James in a case far outside their jurisdiction - and a little too close to home. When a second death follows closely on the heels of the first, Lynley finds he can't help taking the investigation personally - because the evidence points to a killer within his own family.