Robin Nye 
Retribution [EPUB ebook] 

An aircraft crashes into a country mansion at Bewl Water in Kent, killing everyone attending a weekend party. A terrible accident or a deliberate act of vengeance? A girl is then reported missing and her mother is murdered before three men are shot dead at a local beauty spot. ‘Retribution’ is the third book in the DI Sarah Hunter and DS Ted Selitto series in which the two detectives are faced with trying to find a link between apparently unconnected events. Eventually, they embrace the possibility that one of their most feared adversaries is pulling all the strings as this intricate and thrilling tale of revenge reaches a remarkable last-page climax.