Leo regrets spying on a loved one. Susan is unsettled by a student's clingy behaviour. Terese worries about her impending future. Byron battles with an existential crisis.

James Longman (ABC News Chief International Correspondent and "What You Need to Know"); Nicole Scherzinger (mentor and judge, "Building the Band"); Ladies Get Lit.

Returning Champion; 

When Steven suspects Galyna of drinking on the job, he plans a mediation with Masha in the hopes of ending their feud and getting the business back on track.

Nicole confronts Ted about yet another secret he's ben harboring; Anita tries to ease Vernon's guilt; Chelsea is livid with her father. 

Clive Myrie asks the questions as four more contenders take to the black chair under the spotlight and the ticking clock in an attempt to become the next Mastermind champion. The specialist subjects are the men's Euros from 2000 to 2024, the writer Truman Capote, the television series Gilmore Girls and the British artist LS Lowry.

On the outskirts of Scunthorpe, PCs Billy Stead and Nathan Saltmer are on the tail of a possible cloned BMW, but the driver attempts a getaway, running out of road and hitting a dead end. Determined not to give himself up, he makes a run for it across a field. What has he got to hide? On the M62, Billy is partnered with Sgt Lucy Hunnybun in pursuit of a vehicle suspected to be involved in multiple car thefts the previous night.

Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far. A husband-wife-friend combo take on three fans of the films of Leos Carax.

The first round of the competition continues. Students from UCL take on a team from next-door neighbours SOAS. Amol Rajan asks the questions.

Cyberattacks are on the rise. Reporter Richard Bilton investigates the online crimewave and meets the secret agents trying to stop the hackers.

The case against King of Judaea Herod the Great, best known for his attempt to remove his rival, the 'King of the Jews' by ordering the execution of all male infants in Bethlehem shortly after the birth of Jesus Christ. He was also accused of murdering his own wife, children and countless other innocents.

A mysterious inscription, a famous name and a colossal price tag. The team embark on a high-stakes quest to authenticate a 'lost' Churchill. Is it genuine or a clever fake?

Five months after jovial London resident Sinead Healy disappears, her family finds law enforcement's prime suspect impossible to accept.

The police investigation has never closed but the murderer's identity has remained a mystery since 1983, the killer quite literally disappearing into the night. Now, over forty years later, there is a glimmer of hope – a DNA profile from preserved crime scene evidence that police believe belongs to George's killer.
With exclusive access, this series offers a rare glimpse into the inner workings of a cold case investigation, revealing the painstaking efforts to piece together fragments of the past to help solve the crime in the present.

Detectives from the eighties onwards have been haunted by this case; George Murdoch's killer is the one that got away. The police of the past, however, were hampered by the lack of CCTV and mobile phone evidence – resources indispensable to a modern-day inquiry. Despite conducting 10,000 house-to-house inquiries and recording 7,000 statements, the killer has remained beyond their grasp.

But now the net is closing, and the public have a vital role to play. The killer's DNA hasn't matched to a profile on the national database, but detectives have the next best thing – a list of possible blood relatives that could lead them to the door of a murderer.