The Dark HalfThad Beaumont is a writer. In the not too distant past the literary press was full of critical acclaim for his work. Then he hit a period of difficulty with his writing, and he invented George Stark. At first, Stark was a bit of fun, a pseudonym, complete with sinister author biography, under which Thad could create violent and commercial thrillers. But the thrillers became bestsellers and soon Stark was earning far more money than Beaumont, and