There's a reason the Lewinsky scandal was so riveting: it was a true story that was better scripted than fiction. It began as John Grisham, with big-haired, twangy-voiced Paula Jones alleging sexual improprieties in a Little Rock hotel room. It ended as Shakespeare, with a powerful leader nearly felled by a tragic flaw. And it was propelled by characters a Hollywood screenwriter would kill to have dreamed up: the giggling intern, the treacherous best friend.
In A Vast Conspiracy: The Real Story of the Sex Scandal That Nearly Brought Down a President (Random House; 422 pages; $25.95), New Yorker writer Jeffrey...