A short story in John French’s ongoing Horusian Wars series, The Spirit of Cogs is a sinister little ghost story told by Glavius-4-Rho to Severita while the ex-magos is working on a repair. Casting his machinic mind back to his first experience on a true forge world, Glavius-4-Rho tells a tale of his younger self being recruited into a mysterious project, swathed in secrecy, which requires his expertise. He and another magos throw themselves into their work, despite the strange phenomena plaguing their efforts, but before long they start to question the consequences of the Mechanicus’ thirst for knowledge at all costs.
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