There was a time when Shane Black was the highest-paid screenwriter in Hollywood. His script for the 1991 film "The Last Boy Scout" famously fetched $1.75 million from the Geffen Company, with a $1 million guarantee. That price broke records and made Black an even hotter commodity than he already was. At that point, Black had already written the hit films "Lethal Weapon" and "The Monster Squad" while also doing uncredited punch-ups on "Predator," "Dead Heat," and "The Hunt for Red October."...