Lenny enjoys a night away from the Vatican with a childhood friend, whilst Voiello has a crisis of conscience when an opportunity presents itself.
With Elizabeth in a new role, Philip tries to assert some power. Churchill wants to delay the coronation. King George’s disgraced brother arrives.
Having been made to sleep in the car by Mrs Khan after forgetting their wedding anniversary, Mr Khan is on a mission to make amends. But his boast to Dave that he knows local boy Moeen Ali backfires when Amjad suggests he could get the famous England all-rounder to make a celebrity appearance at the fundraiser that Mrs Khan and Shazia are helping organise. Mr Khan has no option but to get to the cricket match to find Moeen and do whatever it takes.
With King George too ill to travel, Elizabeth and Philip embark on a four-continent Commonwealth tour. Party leaders attempt to undermine Churchill.
Nine months into Lenny's papacy, he gives his first audience to the Italian prime minister. Dussolier carries out a controversial edict.
Elizabeth rejects protocol by appointing Philip to coordinate her coronation, but his ideas create conflict. The Duke of Windsor returns to London.
When Scott leaves the show for a new opportunity, Jason Mantzoukas takes over as special substitute host and his first guest ends up being Scott; legendary soul singer Donny Gary.
Margaret and Peter come to Elizabeth with a request. With a royal scandal about to break in the newspapers, the Queen Mother intervenes.
Sandi Toksvig hosts a nosey, noisy episode of QI with Aisling Bea, Corey Taylor, Ross Noble and Alan Davies.
As the Soviets test the H-bomb, both Churchill and Eden have major health crises. Angry about her inadequate education, Elizabeth hires a tutor.
Dan Jones explores the history of the Welsh capital's landmark, Cardiff Castle, and discovers more about the various incarnations over the centuries.
Margaret and Peter are reunited, but another obstacle stands in their way. Elizabeth is torn between her duty as Queen and her love for her sister.
The Rance family is engulfed in a firestorm of publicity; Father Tomas finds himself unexpectedly thrusted into the public spotlight, as his search leads him into a terrifying underbelly of the city.
Five-0 must free McGarrett's mother, Doris, when Catherine informs them that she was captured and is about to be executed after attempting to free Wo Fat's imprisoned father. Also, Chin loses his appeal to have Sara's adoption delayed, and she must move to Mexico.
A critical clue on Snake Island sends the team into the dangerous Paraguayan jungle, with more deadly predators than before. A historic artifact brings them closer to the treasure, but life-threatening encounters nearly end the expedition.
As tensions with Philip increase, Elizabeth spends time with her old friend Porchey. Churchill’s portrait is painted for his 80th birthday.
When dense smog cripples London for days and creates a serious health hazard, Churchill’s inaction leaves him vulnerable to his political enemies.
Riley skips out on helping Topanga at the bakery to stay home and binge-watch her favorite TV show.