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Okay. It's the afternoon of March 4, 1848, at the Amigo Prison in Brussels, Belgium.

30-year-old Carl Marks walks through the winding halls flanked by two guards holding him tightly by the arms.

As he's marched past locked cells, he sees prisoners turn to inspect a new arrival,

feeling their eyes on him. Marks holds his head up high, refusing to be intimidated.

Coming to an open cell door, the guard stop and then shove marks inside.

The doors then slam shut and the guards saunter away,

leaving Marks alone in the cold darkness of the cell with only rats for company.

He has no idea how long he'll be here.

All Marks knows is that he's been accused of supplying weapons to the organizers of a planned

workers' revolt. But the only evidence against him is a sum of 6,000 francs that Marx

recently received from Germany. He told the police it was an inheritance from his father,

but they didn't believe him. With nothing else to do, Marx takes in his cramp surroundings. The only light in the

cell comes from a narrow window, set high in the wall, where he can see only a sliver of the sky.

Amigo prison has seen over 300 years of inmates, but Marx wonders whether the building will remain

standing much longer. So much has changed in the last two decades,

it feels like all of Europe is on edge, a powder keg ready to explode. All it needs is a spark,

and Karl Marx intends to provide it. The next morning, the guards return to fetch Carl

Marks from his cell. He and his family

...