Jeremy Bamber, who practically runs the Essex family farm 'White House' from an annex, promises at a city party to the host, his brother in law Colin Caffell, to keep an eye on his sister Sheila Caffell née Bamber, whose mental instability keeps worsening despite therapy and medication. Soon after, Colin drops his wife and their twins aged six, Nicholas and Daniel, at the Bamber farm, where he keeps his promise to tell grandparents Nevill and June the boys are to be spared further prayer, which grandma expected on their knees. The police gets a call from Jeremy that Nevill was abruptly cut off after phoning for help as Sheila went berserk, armed. After gathering a SWAT type team, the police enters and finds Jeremy's six kin fatally shot, only the dog survived. The detective in charge quickly rules Sheila committed suicide after a multiple murder, but side-tracked DS Stan Jones has his doubts, at least about a two-shot suicide.
—KGF Vissers