At the height of her career, journalist and What's My Line? show panelist Dorothy Kilgallen was found dead inside her Manhattan town house.

Though her passing was ruled an accidental overdose at the time, lawyer and author Mark Shaw argues Kilgallen was murdered after gathering crucial information in the assassination of President John F. Kennedy.

In his new book, The Reporter Who Knew Too Much, Shaw explores the possibility of foul play, purporting that the TV personality's untimely death was arranged by none other than New Orleans Mafia don Carlos Marcello, who feared her investigation for a tell-all book would accuse him of orchestrating the JFK and Lee Harvey ­Oswald killings.