In the past year, there have been some high- profile cases of domestic tragedies, such as that of Pc Karl Bluestone, 36, of Gravesend, Kent. He bludgeoned his wife Jill to death with a hammer and killed their two younger children last August after Jill threatened to leave him. He then hanged himself. An inquest heard that Bluestone had been arrested twice following violent family disputes, but he had never been formally disciplined or charged. Social services had also decided the children were not at risk.