It's "Delta and the Bannermen" versus " Mummy on the Orient Express" in an episode that takes a break from the hustle and bustle of adventuring through time and space.

It's "Death to the Daleks" versus "The Rings of Akaten" in an episode focusing on the shadowy, secret societies that lurk in the corners of the Doctor Who universe.

It's "Mission to the Unknown" versus "Boomtown" in an episode focusing on stories that tackle the loose ends and lingering questions from other, larger stories.

It's "Castrovalva" versus "Deep Breath" in an episode all about The Doctor's bleary-eyed post-regeneration adventures.

It's "The Krotons" versus "Planet of the Ood" in an episode all about how the universe is a horrible place where different races frequently can't meet eye to weird-alien-eye.

It's "Timelash" versus "The Shakespeare Code" in an episode packed with iconic figures from actual history in our beloved fictional show.

It's "Ghost Light" versus "Night Terrors" in an episode packed with creaking doors, howling winds, and maybe a ghostly figure or two.

It's "City of Death" versus "Time Heist" in an episode filled with burglary, robbery, larceny, and all manner of intergalactic theft.