Inspired by the book Sabriel by Garth Nix.
The nine gates/precincts are borders in which the Abhorsen (protectors of the living) traverse the dark depths of the afterlife to return souls, seek information or banish ‘free magic’ beings.
Necromancers who raise the dead for their evil bidding also walk here but their intentions are less honourable. They are the opposing enemy to the Abhorsen. Necromancers use ‘free magic’, a raw and untamed magic to create and free trapped creatures or to raise corpses from their resting place.