The late night saga begins in the uncharted wilderness of after-hours programming. In the early 1950s, an era when television broadcasting literally stops at 11:00 p.m., NBC dares to push the envelope with something called the Tonight Show. It works. It seems insane, but American audiences are ready to stay up--and advertisers are ready to spend big money to reach that audience. In the wake of Tonight’s success, CBS and ABC are left in the dust. But they’re determined to grab a slice of that valuable late night pie as the war begins for ownership of the midnight hour.