On this “Face the Nation” broadcast, we sat down with NSA Robert O’Brien and former Vice President Joe Biden Source

An investigation into the death of a Hollywood therapist. Did the system do enough to protect her from alleged killer Gareth Pursehouse? Her former fiancé Drew Carey calls for updated laws. “48 Hours” Erin Moriarty reports. Source

Bernie Sanders wins Nevada caucuses; Docuseries shows fight against opioids Source

Hughes believed the Earth is flat, and wanted to prove it by taking pictures from a homemade rocket. Source

Amy Klobuchar addressed supporters as results from the Nevada caucuses trickled in Saturday. Klobuchar spoke from Minneapolis, as many candidates have already moved on to Super Tuesday states. Bernie Sanders appears poised to win Nevada. Source

Americans passionate about their political candidates often tell the world with a hat, t-shirt or bumper sticker. For the Smithsonian — these items represent history in the making. Natalie Brand reports. Source

The Hollywood therapist was devoted to helping people. Did the system do enough to protect her from her alleged killer? Source

Sanders had a big lead among voters under 45 and Latino voters, winning more than 50% of both demographics. Source

Bernie Sanders addressed supporters in San Antonio, Texas, on Saturday, shortly after he was declared the winner of the Nevada caucuses. “In Nevada we have just put together a multi-generational, multi-racial coalition which is not only gonna win in Nevada, it’s gonna sweep this country.” Source

Despite poor finishes in the primary contests thus far, Biden told “Face the Nation” he “feels good” about South Carolina Source