Part 1 of 3 in Las Vegas. Items include drawings by folk musician Woody Guthrie; a 19th-century tavern clock by clock-maker Aaron Willard; and a five-carat, Asscher-cut diamond ring.

Who killed Baron Manfred von Richthofen (the Red Baron)? Forensic evidence and recently discovered papers hold clues about why the celebrated WWI German air ace met his fate on April 21, 1918.

President Obama presents Paul McCartney with the Library of Congress Gershwin Prize for Popular Song at this White House fete, which features performances by the former Beatle, Stevie Wonder, Elvis Costello, the Jonas Brothers, Jack White, Emmylou Harris.

In the eighth installment of his ADVENTURES WITH PURPOSE series, renowned adventurer Richard Bangs ventures into the heart of Hong Kong to discover what forces drive a city in which the spiritual concept of chi and the worldly concept of wealth coexist. Bangs begins by taking in one of the most dazzling festivals on earth, Chinese New Year.

Long-running panel discussions on topical (mostly political) issues that sometimes play like a noisy family dinner in which everyone speaks at once, until moderator John McLaughlin brings all to order.

Country music's Brad Paisley and Dierks Bentley perform. Paisley spotlights material from his 2007 "5th Gear" album; Bentley features songs from his 2006 album, "Long Trip Alone."

"Cat Among the Pigeons" finds Poirot investigating a series of slayings at a girls' school where the heir (Amara Karan) to a Middle Eastern throne has been hiding since revolutionaries toppled her country's monarchy.