Dorothy Kilgallen's tell-all on a Mafia don might have got her killed

On the night before her shocking death, Dorothy Kilgallen, a star panelist on the hit TV game show "What's My Line?" correctly guessed the occupation of a mystery guest: a woman who sold ­dynamite. The glamorous, razor-sharp Kilgallen delighted viewers, but behind the scenes, the dogged and courageous reporter was hot on the trail of...