Two years ago I started researching an extraordinary escape story under the Berlin Wall for the podcast #tunnel29, for @bbcradio4. Since then lots of you have been asking if there are any photos of the people in the story, to which the answer is a resounding yes. Lots of photos..

This is Joachim Rudolph - escapee, digger and inventor... the star of the show. I spent many days interviewing him in his apartment in Berlin - he was a wonderful man to spend time with, with a forensic memory.

One of the last stretches of the Berlin Wall still standing today. There were 156km of it in all (and at one point 484 guard dogs). There were around 5,000 successful escapes - T29 was one of the most ambitious (and the only one to end up on screen)

Siegfried Uhse, the gay hairdresser blackmailed into becoming a Stasi spy. And here’s that “letter of commitment” I mentioned in the podcast, which he wrote when he agreed to become an informant.

The Tunnel!

...and the moment the tunnel flooded in Episode Four

Wolf Schroedter, “the fixer” who made the controversial deal with NBC News. I interviewed him in his cabin in the woods, with his beautiful Rhodesian Ridgeback lying at our feet.

Uli Pfeifer, one of the diggers, showing me the map they used to work out the direction of the tunnel.

The result of many day’s hard work...trying to figure out where Siegfried met his Stasi handler - finally...we found it! On Torstrasse. Codenamed “Orient”, it’s where Siegfried told his handler all about the tunnel.

Wolfdieter and Renate Sternheimer, the lovers separated by the wall. Spent a very emotional morning with them hearing their story. Wolfdieter came to London for the launch. People were blown away by his story.

A replica of one of the fruit and veg vans the Stasi used to take people like Wolfdieter to prison in….one of those details that’s always stuck with me.

A typical Stasi interrogation room, like the one Wolfdieter was questioned in.

The old Stasi Headquarters in Berlin-Lichtenberg. Berliners called it “The House of a Thousand Eyes.” It’s now the site of the Stasi Archives.

Inside Hohenschönhausen prison, where Wolfdieter was taken after he was arrested by the Stasi.

The glamorous messenger, Ellen Sesta. Without her, the operation would have failed. Interviewing her was great fun - she had a devilish sense of humour and a very stylish apartment full of antiques and leopard print scarves.

Apartment 7, Schonholzer Strasse - the building the tunnellers broke up into. To the left of the green door you can see a plaque dedicated to Tunnel 29. Felt very emotional when I saw this.

The memorial at Bernauer Strasse, commemorating all those who died at the wall - over 130 of them. The oldest was 80, the youngest was just 6 months old.

Had to include a pic of these - the shoes that Joachim found in the tunnel, belonging to the daughter of Evie, the woman he rescued who he went on to marry.

Joachim and Evie on their wedding day, a few years after he helped her escape through the tunnel.

Me recording in a replica of Tunnel 29. We used these original recordings in the podcast so you can hear just how small and claustrophobic the tunnel was. If you go to Berlin, you can see that replica by doing a tour with the brilliant Berliner Unterwelten.

Finally...well almost finally..a special shout out to all the children who’ve listened to T29. I’ve been blown away by the number of 8-9 yr olds who made it through all ten eps! It means a lot to the tunnellers that the next generation wants to understand their stories.

Bonus prize for making it this far….here’s Joachim parachute-jumping. He got addicted to it after making it to the West. The reason why is fascinating. All this and much more in my book which will be out in August next year for the anniversary of the building of the Berlin Wall.