Regular team captains Paul Merton and Ian Hislop are joined by guest host Katherine Ryan and panellists Richard Osman and Desiree Burch.
Ulrich questions a frail and frightened Helge in the nursing home. Jonas searches for Mikkel, but the stranger warns him about meddling with the past.
Ulrich looks to the past for answers and dredges up disturbing family secrets. Armed with new tools, Jonas probes the cave's murky depths.
When a grim discovery leaves the police baffled, Ulrich seeks a search warrant for the power plant. A mysterious stranger checks into the hotel.
It's 1986, and Ulrich's brother, Mads, has been missing for a month. Confusion reigns as past and present intertwine.
Ulrich runs afoul of the law, Helge tries to dodge Egon Tiedemann, Claudia harnesses the cave's powers, and Katharina lashes out at Hannah.
In 1953, the disfigured bodies of two boys are exhumed at a construction site, the future location of Winden's nuclear power plant.
Hannah takes her obsession with Ulrich too far. The stranger asks Regina to deliver an important package. Martha is torn between Jonas and Bartosz.
Bizarre occurrences give Charlotte a sense of déjà vu, and she suspects Peter is hiding something. Franziska snaps when Magnus confronts her.
Peter gets a shock. Jonas learns the truth about his family, but there are more surprises still to come. Helge makes a sacrifice.
In 2019, a local boy's disappearance stokes fear in the residents of Winden, a small German town with a strange and tragic history.
Greatly outnumbered, Rath, Henning and Czerwinski use their wits to fight their foes. Svetlana is tracked down. Dr. Schmidt forces a truth to be seen.
Defying Benda's orders, Rath and Charlotte race to intercept the train. Helga speaks her mind at a memorial. Greta participates in a vengeful plot.
When a big freeze hits the island of Sodor, Diesel finally proves himself to be a hero by bringing the coal for the steam engines.
Fire user Kouhin is irritated that his opponent Shokatsu Sei will not fight at full strength. Shinki user Shoushou struggles against Zenshin style user Koumei. Meanwhile, Chou Soran learns from Rikukin the real reason he gathered outsiders at the Raten Taishou
Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny's relationship.
Sarah talks parenting and finds out some little kids’ big dreams, then visits a Brooklyn classroom to impart life lessons as a substitute teacher. Congressional hopeful Randy Bryce is her guest.
Gordon tries to broker a deal with Penguin that involves Sofia. Meanwhile, Alfred tries to pull Bruce out of his teenage-angst and downward spiral, as Lee Thompkins gains more control over the Narrows.