When a prominent researcher – and her research, and her office – go missing within the boundaries of the Infinite Library, the cell is dispatched to bring her back intact.
A mission for the Spire: The City Must Fall by Rowan, Rook & Decard, published in the Shadow Operations supplement. The mission sends players, in the roles of freedom-fighting cultists, into an occult, reality-warping library full of competing factions. It employs the short-form, sandbox style of adventure design particular to this book.