. TITLE: THE EASY WAY OUT
AUTHOR: STEPHEN MCCAULEY
PUBLISHER: SIMON & SCHUSTER; 298 PAGES; $20
THE BOTTOM LINE: There are many routes out of a bad affair, and a sure-handed comic novelist delivers a surprising one.
It's not easy to write a character who has the power to charm. They're like witty people -- the author had better be able to suggest an elusive quality without making heavy weather of the whole matter. Stephen McCauley has that skill. The hero of The Easy Way Out is a fellow of no obvious consequence, but the reader gladly follows him through a...