Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far – the vital extra ingredients are logic and lateral thinking.

Another place in the semi-finals is decided, and the questions are as demanding as ever. For example: Ross, Stoke, Henley... what might come fourth in the sequence?

 Bacteria are one of Earth's oldest life forms - dating back over 3 billion years. They're masters of survival and good bacteria help nature function, but some bacteria cause infection and can be deadly

Two more teams of students compete for a place in the quarter-finals in the penultimate match of round two. Amol Rajan asks the questions.

It's the final match in the second round. Who will take the last spot in the quarter-finals? Amol Rajan asks the questions.

Innocent victims are being scammed out of thousands of kroner. We are hunting down the man behind the scam.

GK Barry, Jamali Maddix and Jimmy pass judgement on a flatmate who uses radioactive material to get her own way, and a woman obsessed with STI checks.

While a family is divided over the lucrative sale of some property, a daughter given up for adoption reappears.

Finals week kicks off for the remaining five celebrities, and things take a sweet turn, as pastry skills and spectacular creations come to the fore.

Henry Cole and Fuzz Townshend visit Richard's eclectic shed in Hook, packed with bikes, cars and curiosities, and choose a classic Harley-Davidson Sportster to save.

Henry Cole and Fuzz Townshend visit Dave's Derby shed and pick a classic Triumph Daytona, a British icon with racing heritage, for their next restoration challenge.

Presenter Carla O'Brien with reconstructions, CCTV footage and live studio appeals for information from the public, to help with Garda investigations.

A manhunt is underway after a shooting at Brown University left two students dead and multiple injured. An antisemitic mass shooting in Sydney Australia over the weekend also left 16 dead, including one of the two suspected gunmen. Plus, fractures showing among Donald Trump's support with MAGA Republicans. And, remembering Rob and Michele Reiner, who were found dead Sunday. MS NOW's Ari Melber reports and is joined by Rob D'Amico, Mark Leibovich, and Margaret Carlson.

Live from Acrisure Stadium, Pittsburgh, PA. With host Scott Van Pelt and analysts Marcus Spears, Ryan Clark, Jason Kelce and NFL Insider Adam Schefter. The crew reviews Sunday's games and looks ahead to the MNF matchup while updating fans on the latest league news.  

In Providence, Rhode Island, authorities are releasing new video and asking the public for help identifying the person of interest in connection with the killing of two students. Nine other people were injured. NBC News' Erin McLaughlin reports from the scene. New videos emerged of the horror on Australia's Bondi beach, as two gunmen unleashed what police described as a terror attack on a Hanukkah celebration. Sara James reports. A jury in Massachusetts convicted Brian Walshe for the murder of his wife, Ana. During the closely watched trial, prosecutors said Walshe was motivated by money and jealousy. The defense said Walshe was not responsible for Ana's death. NBC News' Stephanie Gosk reports. The Justice Department says they've thwarted a terror plot in California and arrested people who planned to set off bombs in LA on New Year's Eve. Officials did not provide a motive but said they're part of a radical faction of a far-left group. NBC News' Liz Kreutz has the story. After Rob Reiner and his wife Michele were found dead inside their Los Angeles home, police arrested their son Nick on suspicion of murder. There has been a massive outpouring of support for the legendary actor and director from across Hollywood and beyond. NBC News' Morgan Chesky reports. This year's Heisman Trophy winner is Indiana University quarterback Fernando Mendoza. His strong work on the field won him the trophy, but it's what he said during his acceptance speech that's winning him fans off the field. NBC Nightly News anchor Tom Llamas reports.

As the holidays approach, the team finds three slain sex workers inside a brownstone - they uncover the murderer has a larger plan in place that they must rush to stop. Meanwhile, Jubal receives a concerning call from his son Tyler.

Actress Torrey Devitto goes head-to-head with actor Craig Robinson; a legal consultant competes with a bartender.

With the threat of a nurse walkout, Alex is caught between her colleagues and Joyce. Ron and Bruce go above and beyond to help an unexpected patient. 

Live from Acrisure Stadium in Pittsburgh, Pennsylvania.

Chaos erupts in the city when an attack disrupts cell, internet and emergency services. As the team races to uncover the culprits, they learn the group responsible is a radical accelerationist movement fixated on resetting society.

The top six artists perform a contemporary and classic song in front of the coaches to compete for the title of "The Voice"; viewers have the chance to vote for their favorite artist overnight.

A hair stylist competes with an occupational therapist; a hair stylist competes with a theater artist.

For thousands of years, secret societies are said to have guarded hidden knowledge of otherworldly origin.

Rachel Maddow reviews how poorly Donald Trump's policies are being received by the American public as Trump continues to appoint laughably unqualified sycophants to top agency roles, and leadership failures mount. As a result, not only are Trump's poll numbers tanking, but even Republican politicians are recognizing that it's not in their interest to tie their fates to Trump's sinking ship.

As Donald Trump fills the leadership roles of the U.S. public health system with quacks and kooks, sane states are taking it upon themselves to employ actual experts with real public health administration experience to make sure the public has credible guidance even if that guidance is not coming from the federal government. Dr. Debra Houry, former CDC official and new senior medical adviser to the California Department of Health, talks with Rachel Maddow about this new shift in public health authority as Donald Trump and his clown show are simply ignored.

And the FBI is suffering a similar fate, with Trump lackeys in leadership driving out the agency's qualified staff and leaving behind only incompetent Trump loyalists to run the sadly weakened organization.

Watson's biohacker friend Hobie (aka the man with the glowing chest) returns when he rushes his new girlfriend to the Holmes Clinic after they partake in a gene-editing experiment that goes wrong. Meanwhile, Watson becomes suspicious of Sherlock.