There was more than one band named Silent Scream. One of them was a hardcore band from Milwaukee, Wisconsin that was around from about 1987 to about 1989. More info: http://milwaukeehardcore.net/milwhc/MilwHC:Bands:SilentScream. The other was a California based death/thrash band featuring the following:
#3 Demo(1991) and From The Darkest Depths Of The Imagination(1992) which was produced by Gene Hoglan. The band has 2 pages up at MySpace. The official bands URL is: http://www.myspace.com/silentscreamusa and the fan page is http://www.myspace.com/matrixofmadness

Read more about Silent Scream on Last.fm.