Brother Assassin

On the planet Sirgol the death machines have a unique and sublte mode of
attack. Now, the time and place of the next attack has been
pinpointed--the berserkers will try to eliminate Vincent Vincento, an
early genius whose loss will cost mankind a hundred years of progress in
the physical sciences. Derron Odegard, one of the elite corps of Time
Operatives, has the toughest assignment in Sirgol's history--protect
Vincento at any cost.