Sin RPG: A Spire Sourcebook

Sin delves deeper into the world of Spire, and includes:

Two new classes: the divine confidence trickster Gutter Cleric and the necromantic bureaucrat Mortician Executioner
Extensive sections on the Crime, Order and Religion domains including dozens of new abilities, hundreds of plot hooks and fiction tidbits, and beautiful illustrations by Adrian Stone
Three ready-to-run scenarios, pitching the player characters headlong into a world of squabbling holy orders, mysterious librarians, demonic artefacts, overclocked noir magic, interdimensional breaches and hotwired avatars to death gods