THE LIFE OF SIR ARTHUR CONAN DOYLE (304 pp.)John Dickson CarrHarper ($3.50).
Bound and writhing, Prussian Agent von Bork glared at his disguised captor and snarled:
"Then who are you?"
"It is really immaterial . . . but . . . it was I who brought about the separation between Irene Adler and the late King of Bohemia . . . It was I also who saved from murder, by the Nihilist Klopman, Count von und zu Grafenstein . . . It was I. . ."
Von Bork sat up in amazement. "There is only...