Don't miss it: Thrilling doc 'The Staircase' returns

Whenever someone asks about my all-time favorite documentaries, I make sure to mention The Staircase. The eight-part feature, which aired on the Sundance Channel in 2005, is absolutely gripping and illustrates just how powerful documentary filmmaking can be.

The Staircase follows a complicated murder case in Durham, N.C., where a man is put on trial for killing his wife. Throughout the...