Geraldine and Edward's happiness is dealt a devastating blow with a terrible diagnosis that threatens their relationship and leaves Geraldine's life hanging on a thread. On a trip to the Caribbean, Edward attracts the attention of a former Russian Special Ops team on a deadly mission for an Eastern drugs cartel. This unwanted scrutiny has tragic consequences that follow Edward back to the Cotswolds, leading to horrific murders with medieval roots. Now in grave danger, Edward must use all the resources at his, and the departments, disposal to track down and eliminate the threat before more close friends and family are killed. A violent confrontation takes place in back alleys on the Rock of Gibraltar where only one man can walk away.