Warning: This article contains spoilers aboutThe Witcher: Nightmare of the Wolf.
The answers he finds have consequences that not only affect Vesemir but all his fellow Witchers.
There’s a reason why this story is being told as a precursor to the live-actionWitcherseason 2.

Henry Cavill’s Geralt and Theo James' Vesemir.Netflix (2)
It’s at this stronghold where young boys are trained to become Witchers through the School of the Wolf.
It’s a nightmare for the School of the Wolf, if you will.
That way, their creature-slaying creed could stay in business.

‘The Witcher: Nightmare of the Wolf’ poster.Netflix
This was also their undoing.
Deglan thought he killed her after her power proved uncontainable, but she used magic to fake her death.
One of these boys is a young Geralt.

Filavandrel (Tom Canton) in ‘The Witcher: Nightmare of the Wolf’.Netflix
Prior to her attack on Kaer Morhen, Tetra joins Vesemir on a mission.
He and his fellow Witcher got into a bar brawl with a few of the king’s knights.
The journey brings Vesemir and Tetra to an old elven school where Kitsu has been experimenting on children.

Theo James voices Vesemir in ‘The Witcher: Nightmare of the Wolf’.Netflix
Only one girl is found to have survived.
Mutant or not, she’s still an elf.
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The last but crucial connection betweenNightmare of the WolfandThe Witcher?