Nevill and June Bamber were shot Use_firearm and killed Killing inside their farmhouse , along with their adoptive daughter , Sheila Caffell , and Sheila 's six-year-old twin sons , Daniel and Nicholas Caffell .

Nevill and June Bamber were shot Use_firearm and killed Killing inside their farmhouse , along with their adoptive daughter , Sheila Caffell , and Sheila 's six-year-old twin sons , Daniel and Nicholas Caffell .

The police at first believed Know that Sheila , diagnosed with schizophrenia , had fired Use_firearm the shots then turned Becoming the gun on herself .

A silencer the prosecution said Telling was on the rifle would have made it Causation too long , they argued Quarreling , for Sheila 's fingers to reach Arriving the trigger to shoot herself .

They argued Quarreling that the silencer might not have been used Using during the killings Killing , that the crime scene may have been damaged Damaging then reconstructed Building , that crime-scene photographs were taken Creating weeks after the murders , and that the time of Sheila 's death had been miscalculated .

A key issue was whether Bamber received Receiving a call from his father that night to say Telling Sheila had `` gone berserk '' with a gun .

Bamber said Communication that he did , that he alerted Warning police , and that Sheila fired Use_firearm the final shot while he and the officers were standing Placing outside the house .