Crazy story.
Here a news story with the summary.
http://www.nbcnews.com/id/30190350/ns/us_news-life/t/passenger-lands-plane-after-pilot-dies/
It wasn't just a "passenger". Guy had a pilot license and 150 recent hours in a Cessna. I bet it paid off he was invited into the copilot seat and shown around by the pilot. Incredible job by the guy, on the return from his brothers funeral no less.
G