They were dubbed the Speed Freak Killers , due to their long history of methamphetamine use .
In 1999 , Wesley Shermantine and Loren Herzog , were arrested by the department , and subsequently convicted of four murders .
murders were dubbed the Wesley Shermantine     , due to Wesley Shermantine 's long history of methamphetamine use .
In 1999 , Wesley Shermantine and Loren Herzog , were arrested by the department , and subsequently convicted of four murders .