A nighttime raid on a Barcelona construction site becomes a case for the Ordo Veritatis when DNA tests on blood found at the scene trace back to a known Esoterrorist operative. Further investigation leads the team to a startling discovery. During the Spanish civil war, the site, now slated to become an office tower was a prison. In its most secret cells, a
renegade avant gardist used the principles of surrealist and abstract art to devise a so-called psychotechnic prison cell.
Designed to drive its pro-Franco captives insane, the cell was known only to the leaders of a single anarchist faction. The Esoterrorists have excavated the buried chamber hoping not only to update the cruel science of psychotechnic torture, but to inch closer to the obscure origins of their own movement. By finding the cell, the PCs protect the membrane, save their colleagues from the threat of the psychotechnic cell, and find crucial historical intelligence.