The Accomplice  by Charles Robbins (Thomas Dunne Books)  It's
the same old story, but it gets us every time. The bedrock
suspense plot features a guileless man or woman who becomes
enmeshed in evil machinations beyond his or her ken. Our
innocent must wise up quickly; the unsavory alternative is
either to become a fall guy or to die.  First novelist Charles
Robbins spins out a political variant on the basic suspense plot
in "The Accomplice." Our Everyman hero is a naive Hill staffer
who has the wool slowly pulled from his wide eyes by a satyr-ish
senator making a run for the White House.  Henry Hatten is hired
as communications director for the presidential campaign of
Nebraska Sen. Tom Peele. Henry's goody-goody track record better
qualifies him for hall monitor than political operative, so it's
a puzzle that he's taken on by Peele. In Henry's last job — a
gubernatorial campaign — he refused to publicize a scandal that
would have torpedoed the opponent. Henry remains such an
idealist that, while watching Pee