Caterva (meaning "throng" or "horde") tells the story of seven erudite, homeless, and semi-incompetent radicals traveling from city to city in an attempt to foment a revolution: conspiring with striking workers, setting off bombs, and evading the local authorities. But this is no political thriller. Like his literary "descendant" Julio Cortazar--who mentions this book in Hopscotch--Filloy is far more concerned with his characters' occasionally farcical inner lives than with their radical machinations. With its encyclopedic feel, and its satirical look at both solidarity and nonconformity, Caterva is considered to be among Filloy's greatest achievements.