In 2002 , a man had been convicted of murdering his wife by antifreeze in 1998 .
In addition to the Turner and Castor antifreeze murder cases , similar cases were reported in 2008 .
In 2002 , a man had been convicted of murdering Castor 's wife by antifreeze in 1998 .
In addition to the Turner and Castor antifreeze murder cases , similar cases were reported in 2008 .