The Magnus Archives is a horror fiction podcast written by Jonathan Sims, directed by Alexander J. Newall, and distributed by Rusty Quill.

Jonathan Sims is installed as the new Head Archivist of the Magnus Institute's Archives, his predecessor Gertrude Robinson having gone missing and is presumed dead.

Prentiss stalks the Institute for several weeks until Sims accidentally damages a wall while attempting to kill a spider, revealing millions of worms hiding behind it.

The attack is ended when Institute Head Elias Bouchard activates the building's carbon dioxide fire suppression system which kills Prentiss and all the worms.

In the aftermath, the third archival assistant, Martin Blackwood, reveals that he has found the remains of Robinson in secret tunnels beneath the Magnus Institute.

Following the revelation that Robinson was shot to death, Sims becomes paranoid that one of his coworkers is responsible and begins spying on them for evidence, and his failure to remain discreet prompts them to stage an intervention and give him solid alibis.

This notion is reinforced when Sims takes a live statement from Melanie King, a ghost hunter who had previously interacted with the real Sasha and is able to recognize that the Not-Them is not her.

While being harbored by his ex-girlfriend Georgie Barker, Sims records the story of his first encounter with the paranormal, which he now recognizes as a manifestation of an entity called the Web.

Sims retraces Robinson's steps, traveling around the world and discovering that he is developing the ability to spontaneously gain knowledge and that he now becomes weaker if he doesn't read statements regularly.

Sims arranges for himself, Stoker, Hussain and Tonner to blow up the Unknowing while Blackwood and King, who had been hired on as Sasha's replacement, steal compromising material from Bouchard's office to get him arrested.

Sims deduces that King is being influenced by the Slaughter as a result of her previous encounters with its manifestations and extracts a 'ghost bullet' from her leg, and she wounds him after waking up mid-surgery.

Sims resolves to save Tonner, but since the coffin is aligned with the Buried he plans to leave a part of himself outside of it to find his way back to, and has the Boneturner, a servant of the Flesh, extract one of his ribs.

Following his successful retrieval of Tonner from the coffin, Sims researches the other entities' rituals along with Hussain, who has been secretly meeting with Bouchard to take advantage of his near-omniscience.

Meanwhile, Lukas and Blackwood research the emergence of a new entity, the Extinction, and plan to gain all knowledge about it by using the Panopticon of Millbank Prison, which has been preserved within the tunnels and was the catalyst of the Eye's ritual centuries prior.

Bouchard reveals that he is the fourth incarnation of Magnus, who has been body swapping as a form of life extension, but offers to allow Blackwood to kill him in order to use the Panopticon's power.

As the Eye's Archivist, Sims is compelled to record his own statements about every domain they visit, and he finds he has the power to replace, punish, and even destroy the entities' servants, though it does little to make things better.

He destroys the Not-Them, Perry and the Boneturner, but chooses to spare Banks as well as Simon Fairchild and Callum Brodie, servants of the Vast and the Dark respectively.

Sims and Blackwood find a house left untouched by the entities, which is inhabited by Mikaele Salesa, a black market dealer who specializes in cursed items, and Annabelle Cane, a servant of the Web.

Cane convinces Blackwood to follow her to Hill Top Road, a house in Oxford that marks the location of the Gap in Reality which may serve as a gateway to the multiverse.

At Hill Top Road, Cane explains that the entities are doomed to perish since humans have stopped reproducing and the End will eventually kill them all.

Blackwood, having anticipated this, sends Hussain, Barker and King to blow up the Panopticon early but fails to stop Sims from killing Magnus.

Recurring cast[8] In 2018, BBC Sounds listed the show as one of the largest British dramatic podcasts, with an extensive fanbase on Tumblr having driven much of its success.