Walter Kirn has written insightful, best-selling novels — including Up in the Air and Thumbsucker, which were made into movies. He's an expert in the art of fiction.
So why did he fail to see the signs of falsehood in real life?
When Kirn was just starting his novel-writing career, he met a man who was a bold financier, an art collector, a fussy eccentric, a dog lover and a Rockefeller. They became friends.