WGN's thrilling escaped-slave drama 'Underground' is overdue -- and right on time

What stories in our shared, white-centric television culture even compare -- "Prison Break," maybe? The original "Fugitive" series? The answer is nothing compares, nothing so dire and real as the act of escaping slavery via the Underground Railroad in the 19th-century South. If you tilt the prism a certain commercial way (and page through your history books with a TV producer's eye), this is our nation's ultimate action-adventure tale -- the Greatest Escape -- with no ambiguity whatsoever about ...