It's "The Aztecs" versus "The Eaters of Light" in an episode where we dive back in time to explore humanity in the terrifying years before we could watch Doctor Who!

It's "The Feast of Steven" versus "A Christmas Carol" in an episode all about The Doctor taking part in the deadliest war of all time: The War on Christmas!

It's "The Visitation" versus "The Empty Child" & "The Doctor Dances" in an episode packed with illness, ailment, plague and, of course, our favorite Time Lord.

It's “Time and the Rani“ versus “Human Nature“ & “The Family of Blood” in an episode focusing on forgotten stories with forgettable characters, forgetting situations.

It's "The Talons of Weng-Chiang" versus "The Snowmen" in a mysterious episode that pays more than a little homage to a certain consulting detective.

It's "Earthshock" versus "Dark Water" & "Death in Heaven" in a somber episode focused on the grim impact of death.

It's "Terror of the Vervoids" versus "Blink" in a wibbly wobbly episode focusing on stories that grab the fabric of time with both hands and proceed to rip the whole thing in two.

It's "The Sontaran Experiment" versus "The Sontaran Stratagem" & "The Poison Sky" in an episode with a highly mysterious and impossible to decipher theme.