u/MasterAinley

The Zygons have come to claim the Earth, and this time they're playing the long game. For the Black Cadre have a plan, a plan that will take exactly one hundred years to come to fruition.

From the streets of St Petersburg to the plains of Death Valley, the Zygon Century continues...

1922: The Black Cadre by Jonathan Barnes

From Munich to Dublin to an asylum in Dartmoor, the Zygons have agents everywhere, and their plans are growing in scope and ambition.

Can Herbert Scott, that long incarcerated investigator of the occult, do anything to stop them? Is his rescuer - the German heiress, Ilse Lange - all that she seems? And why are the Black Cadre so interested in a mysterious carnival, travelling the wilder reaches of the Cornish coast?

1968: An Incident in Death Valley by Lauren Mooney & Stewart Pringle

Fleeing her brutal human captors, and in hiding from the Black Cadre, the Zygon Vorvoren arrives at a run-down diner in the bowels of Death Valley. There, she finds a friend in Junie, a young waitress, and a town terrorised by a ruthless cult.

But just who is their mysterious leader, 'The Arkon'? And could he really hold the key to Vorvoren's liberation and revenge?

1974: The Caldwell Restitution by Ken Bentley

Agent Caldwell has been posted to the British Embassy in Moscow and ordered to investigate a rising star of the Communist Party. But Caldwell is a shadow of his former self, plagued by nightmares of the past and misty visions of the future.

As the Third Doctor enters the fray, human and Zygon plots collide, and Caldwell's visions threaten to endanger the world. Though neither man can remember the other, can the Doctor and Caldwell put a stop to the Zygon Century, once and for all?

The Doctor and Peri are reunited with an old friend - or is he an enemy? Turlough insists he's changed since they last met. The trouble is, so has the Doctor, and he's not inclined to trust his one-time companion.

As they travel through Stuart England, Medieval France and Viking Denmark, can they forge a new relationship - or will Turlough's secrets force them further apart?

The Reckoning by Nev Fountain

When the TARDIS is stranded in the path of a neutron star, the Doctor, Peri and Turlough have to flee. They end up in seventeenth-century London, where another old friend, Christopher Marlowe, is trying to get out of a pact he's made. Marlowe's soul is on the line - but has Turlough also made a deal with the Devil... again?

A Crucible of Queens by Lizbeth Myles

In the aftermath of the Battle of Agincourt, the Doctor and Turlough find themselves aligned with opposing factions. Turlough befriends Charles, the Dauphin of France, while the Doctor is tasked with healing his father, King Charles VII. But two powerful women are also in play: the Dauphin's adviser Yolande, Duchess of Anjou, and his estranged mother, Isabeau of Bavaria.

Can the TARDIS crew keep both queens happy - and keep their own heads?

The Curse of the Duergar by Julian Richards

Shieldmaiden Hervor braves the ghosts of her ancestors to claim her birthright, the sword Tyrfing. Made by the Duergar, the Dwarf kings of the below, the blade is cursed: once drawn, it must kill. Even the Doctor cannot resist the power of the sword, and to the horror of Peri and Turlough, he is forced to take a life...