What we don't know about Colbert's last 'Late Show'

Stephen Colbert is signing off "The Late Show" this week as CBS ends the iconic late-night TV franchise. Thursday's finale will be a surprise: no guests or segments are being promoted in advance. Colbert's chief rivals, ABC's "Jimmy Kimmel Live!" and NBC's "The Tonight Show with Jimmy Fallon," will both run reruns opposite the finale. 0:00 "The Late Show" wraps up on CBS 0:41 CNN chief media analyst Brian Stelter on what we know — and what we don't — about the last episode 1:25 Clip from the first "Late Show with Stephen Colbert" 3:18 Paley Center for Media curator Jason Lynch predicts what we'll see on the last episode Stream CNN FlashDoc’s new documentary “The Last Laugh: Stephen Colbert,” examining the legacy of one of America’s most influential satirists: https://www.cnn.com/videos/title-2599507 Watch Anderson Cooper 360's "The Stephen Colbert Interview": https://www.cnn.com/videos/title-2599625 #StephenColbert #LateShow #News