South Korea is facing security risks as North Korean missile tests increase. “CBS This Morning” co-host Norah O’Donnell joins CBSN from Seoul to explain how the nation is dealing with the threat. Source

At least 10 people are hurt after a van drove into a group of pedestrians near a mosque in London. The incident is now being investigated as a possible terror attack. CBS News national security analyst Fran Townsend joins CBSN with the latest. Source

President Trump’s attorney says the president is not under investigation, after a Trump tweet seemed to suggest the opposite. CBS News correspondent Chip Reid joins CBSN from the White House with more details. Source

Scientists have enlisted the help of 3D imaging technology to restore Notre Dame to its former glory. A digital team from France’s National Centre for Scientific Research has been working on the site for the past two years since the cathedral was heavily damaged in a fire. Elaine Cobbe reports. Source

Reacting to the Cosby mistrial, attorney Gloria Allred warned “you can never underestimate the blinding power of celebrity.” Allred, who represents numerous women who have accused the comedian of sexual assault, says she hopes more witnesses and accusers will be allowed to testify in a retrial. Prosecutor say they plan to retry the case. Source

After six days of deliberation, a judge has declared a mistrial in Bill Cosby’s sexual assault case. CBS News legal analyst Rikki Klieman and CBS News correspondent Jericka Duncan join CBSN with the breaking details. Source

Formed in 2006, Fleet Foxes experienced worldwide success after two impressive albums, years of touring, and even an appearance on “Saturday Night Live.” But they took a break in 2012 and are now back with one of the most anticipated albums of the year, “Crack-Up.” In a special performance for Saturday Sessions, Fleet Foxes sing “If You Need To, Keep Time on Me” from Electric Lady Studios in New York. Source

“Score” documentary writer and director Matt Schrader and Bear McCreary, composer for television hits like “Battlestar Galactica” and recent film “10 Cloverfield Lane,” join “CBS This Morning: Saturday” to discuss the documentary and the music composing process. Source

Jurors in the Bill Cosby sex assault trial will resume deliberations Saturday after failing to reach a verdict for a fifth straight day. Cosby’s lawyers have repeatedly demanded a mistrial. CBS News legal analyst Rikki Klieman joins “CBS This Morning: Saturday” to discuss what’s next in the trial. Source

President Trump is keeping up his attacks on the Justice Department’s investigation into Russia’s alleged meddling in the U.S. presidential election. On Friday, Mr. Trump took aim at Deputy Attorney General Rod Rosenstein, who is supervising the investigation, and questioned his integrity. Errol Barnett reports. Source