This was an impregnable fortress. The only way you get out was in a wooden box.

The controversial maximum security prison impossible to escape from.

And one of the duties of a political prisoner is the escape.

The IRA inmates who found a way. of a political prisoner is the escape.

The IRA inmates who found a way.

I'm Carlo Gableer and I'll be navigating a path

through the disturbing inside story of the biggest jailbreak in British and Irish history.

The narrative that they want is that this is a big achievement by them.

Escape from the maze, listen first on BBC Sounds.

BBC Sounds. BBC Sounds, music radio podcasts.

Hello, this is seriously from BBC Radio 4.

I'm Gabriel Gatehouse with a series about the most powerful man you've never heard of.

Here's episode 4 of The Puppet Master.

Behind every political decision and every political project could be found Surkov.

A brilliant tactician with keen survival skills.

On Pizalmoza. with keen survival skills.

He wrote music, played chess.

He had connections everywhere.

Where on the trail of Vladislav Circov, the grey Cardinal of the Kremlin, aka Mr Black Square. On a cold November night in 2010,

journalist Oleg Kachen was walking home after popping out for some cigarettes.

As he approached his block of flat he noticed two men loitering. One was holding a bunch of flowers. Hidden inside was an iron bar. I was brutally attacked in front of my home in Moscow. I had about 56 strikes of iron stick by my head. I lose a finger because the...

You lost a finger? One finger. Yeah, I see it. It's gone, a little finger on your left hand.

...