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Case fileEF-020Friern Barnet, London, 1988

Czechoslovakia Sent a Spy to London. A Dutch Mother Thought He Was Her Son

On the morning of Saturday 2 April 1988, Special Branch officers broke down the door of a flat in Friern Barnet, north London, and found an art dealer in his pyjamas with headphones on, listening to a woman's voice reading numbers in Czech. He said his name was Erwin van Haarlem, a Dutchman.

  • 1944 to 2024
  • United Kingdom
  • Netherlands
  • France
  • Czech Republic
  • Czechoslovakia
  • East Germany
  • Austria
  • Soviet Union
  • United States
  • Episode 20
  • 71 min
A studio head and shoulders portrait of a dark haired man in a suit and patterned tie, looking at the camera
The portrait used for the forged passports. Jaroslav Kmenta, Český špion Erwin van Haarlem, JKM 2005; the subject's private archive

I use this name, even though I am convinced it was not yours at birth.

Mr Justice Simon Brown, passing sentence at the Old Bailey, 3 March 1989

Friern Barnet. David Howard, CC BY-SA 2.0 (source)

The film

Watch on YouTubePublished 18 September 2026

At a glance

Period
1944 to 2024
Countries
United Kingdom, Netherlands, France, Czech Republic, Czechoslovakia (today Czech Republic), East Germany (today Germany), Austria, Soviet Union (today Russia), United States
Subject
A Czechoslovak intelligence illegal who lived in London as a Dutchman
Key locations
Friern Barnet, London, London, The Hague, Amsterdam, Schaijk, Caen, Teplice, Rumburk, Olešovice, Prague, Kolín, Brno, Halle, Vienna, Isle of Wight, Moscow, Washington
Themes
Erwin van Haarlem, Czechoslovak spy, StB, Friern Barnet, Old Bailey 1989, spy with no name, numbers station, Official Secrets Act
Episode
EF-020 · 71 min · published 18 September 2026

Case overview

For four years he would say nothing else. A Dutch mother had believed for ten years that he was the son she had given up in 1944. The Old Bailey tried him under a name the court itself was convinced was not his. This is the case of the man with no name: the mother's search, the illegal's London decade, the blood test, the trial behind a screen, and the letter that finally named him.

A file in a Prague safe called her an asset. A court in London called her the victim of a cruel game. He called her Mother for eleven years, and then Mrs van Haarlem, and then, to a writer, a woman he had had to put up with. So the question this case leaves is hers, not his: when a stranger writes "your son" at the bottom of a letter, and means it for ten years, what did she lose, and what did she find?

Follow the timeline

Timeline

25 events
  1. In November 1943 Johanna was nineteen, a shorthand typist. On a train home to The Hague she met a soldier in a German uniform. His name was Gregor Kulig. He was twenty-one, blond, from a farm in Poland, and he had been conscripted into the German army and posted to the coast at Wassenaar. In her own account, told decades later, he forced himself on her at a party at his barracks just before Christmas. She ended it that night. By the new year she knew she was pregnant.

  2. In November the Czech child-welfare officers came and wrote a report: a furnished room, very cramped conditions. The Red Cross took Erwin, not yet three months old, to a children's home in Rumburk, a small town on the German border. The sister at the door said, "You must go now." Johanna went back to her factory job, and then, with the war ending around her, she went home to Holland without him.

  3. In February Czech social workers came to the house with the same choice: sign, or bring him home. On the seventh of May 1947 Johanna signed. The document survives. The undersigned, Johanna Hendrika van Haarlem, hereby declares that she completely renounces her child, Erwin van Haarlem, born in Amsterdam on the twenty-fourth of August 1944, for the benefit of the foster parents in Czechoslovakia. Her father stood over her while she wrote her name. "You must never have the war product. Do as you are told."

  4. On the second of April 1949 Erwin van Haarlem left Olešovice for the last time. He was four years old. The home kept a ledger of nine hundred and thirty-three children, and he is number ten in it.

  5. By 1967 he was inside the ministry's First Administration, the foreign intelligence arm of the service the Czechs knew as the StB, the secret police. He was told to destroy every document that carried his name and to stop seeing his parents. His first cover name was Karel Elsner. His operational code name, the one the file would use for the next twenty years, was GRAGERT.

  6. The identity had been waiting for him since before he joined. In the late 1950s an officer of the service named Čenda Jungmann had built it for use in West Germany, from a classified register the service kept: the names of real children who had passed through the country's orphanages, whose paper trails could be taken over. He gave it a foster childhood at a Prague address in a house chosen because it had been demolished, foster parents invented down to a tobacco tin, and a school register altered to match.

  7. Prague drafted a letter for him to Queen Juliana of the Netherlands. It told the true story of a baby abandoned in Bohemia by a Dutch girl in 1944, raised in a Czech home, and now asking for the nationality that was his by birth. The Queen replied personally. Three months later he collected a genuine Dutch passport at the embassy in Vienna, after three days of questions from officials he took to be watching him.

  8. He arrived in June 1975, by train, on a Dutch passport that was entirely real. He rented a room in Pimlico for seven pounds fifty a week, about a hundred dollars a week today, and took a job as a waiter in the rooftop restaurant of the Hilton on Park Lane, twenty-four floors above Hyde Park. His English was poor and his hair was long.

  9. On the thirty-first of May 1976 she wrote to the Czechoslovak embassy in The Hague. The embassy answered on the eighth of September. Erwin van Haarlem, born the twenty-fourth of August 1944, had been living outside the territory of the Czechoslovak Republic since 1972 without the permission of the authorities. It was a routine letter about an emigrant. In Prague it landed on the desk of the men who had invented the emigrant, and it told them something they had never planned for: the mother was alive, and she was looking.

  10. On the day, she walked out alone into the snow to look at his street, hours before the appointment, and a man in Queen's Gate Gardens stopped in front of her. "Excuse me, but aren't you Mrs van Haarlem?" She said she was. "My name is Erwin van Haarlem. I am your son. I recognised you from the photos you sent me."

  11. On the twelfth of May 1982 he walked into an office above a disused laundry in Golders Green and said, "I hear you need some help." The office was the headquarters of The 35s, the Women's Campaign for Soviet Jewry, run by a woman named Rita Eker, and he had answered their advertisement in the Jewish Chronicle for fluent Russian speakers.

  12. Ten days after Washington they brought him home for a few days to tell him so. The head of the service commended him for his exemplary combat mission. He answered, "I serve the socialist homeland." He was promoted to major. And at a villa in a village outside Prague, the chairman of the KGB, Viktor Chebrikov, presented him in person with a Soviet decoration for the strengthening of combat friendship. He had brought latex masks of Thatcher and Reagan as a present for the guard dog.

  13. In January 1987 he flew to Prague uninvited and asked to be pulled out. They told him he was imagining things, that he could not come home, that his task was to fight the enemy on the front line. And they told him something else, which was true. "Do you know how many illegal people there are in England? Two. Rather, there were two of you. The other betrayed us." He went back to London.

  14. The door came in. An inspector took him from behind. "Enough. It's over." A superintendent read the words: Erwin van Haarlem, I am arresting you on suspicion of espionage. Do not try anything. I have a gun. The man's hand had gone to the drawer where the knives were. He counted the officers coming through the door, and took his hand away.

  15. On the nineteenth of April 1988 a scientist at the Metropolitan Police Laboratory, John Edward Bark, reported on the two blood samples using a technique that was then three years old, the genetic fingerprinting invented at Leicester by Alec Jeffreys. The profiles showed it was one thousand eight hundred times more likely that Mrs van Haarlem was not the mother of the man calling himself Erwin van Haarlem. It was, he concluded, extremely unlikely that he was her son.

  16. On the thirty-first of July she went to see him. In a visits room at Brixton she asked him straight out. "Tell me, I'm hearing all these strange stories. You're not really a spy, are you?" He answered her with a proverb from his own country, translated into English. "We have a saying that where you see the smoke, there will be a fire. But this time it is not true. Too much of the smoke and no fire. I did absolutely nothing that could harm England."

  17. The trial opened in Court One at the Old Bailey on Monday, the twenty-seventh of February 1989, nearly eleven months after the kitchen. The indictment named the defendant as Erwin van Haarlem, because the court had no other name to give him.

  18. The jury went out before noon on the Friday, the third of March 1989, came back once to ask what message he had been preparing to pass, and gave its verdict in the middle of the afternoon. The clerk asked whether they found the defendant, Erwin van Haarlem, guilty or not guilty of doing acts preparatory to an offence under the Official Secrets Act. The forewoman said: guilty.

  19. In October 1991 the Daily Mail reporter who had covered the trial, Paul Henderson, took her back to Czechoslovakia with a photographer, an interpreter, and Hans. At Olešovice the director brought out the ledger, and there was the line: number ten, Erwin van Haarlem, left the second of April 1949, and the four words in the official's hand.

  20. On the twenty-seventh of November 1991 he came into the lobby of the Grand Hotel carrying flowers his wife had bought, and went straight to the men's room to change his winter boots for the polished shoes he had brought in a bag. He took so long that the Dutch ambassador thought he had run away. Then he came out.

  21. The strike ran forty days and took him from seventy-eight kilos to forty-five. On the twentieth of February 1992 the prison governor came to his cell with a letter from Prague, and the letter was addressed to Lieutenant Colonel Václav Jelínek.

  22. The British now had the name, and it changed nothing in the sentence. What changed it was the law. The judge had recommended deportation, the Home Secretary had ordered it, and under a section of the Criminal Justice Act passed in 1991 a prisoner who was going to be deported anyway could be released early. On the fifth of April 1993 Václav Jelínek was put on a Czechoslovak Airlines flight to Prague.

  23. The public learned his real name only in November 2005, when a Czech journalist published the memoir they had written together, and a Budapest newspaper reported that analysts and historians were learning only now who the mysterious prisoner of 1989 had been. By then he had been out for twelve years.

  24. Václav Jelínek died in Prague on the eighth of February 2022, aged seventy-seven. His widow calls him a hero, a brave patriot of Czechoslovakia.

  25. On the nineteenth of November 2024, in her bungalow in Schaijk, Johanna van Haarlem turned a hundred. She had outlived the son she found and the man who took his name.

Key locations

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Documents and evidence

Sources

  1. Jaroslav Kmenta. Český špion Erwin van Haarlem JKM, Prague 2005; 2014 e-book edition, 2005.

    Three years of interviews became a book in 2005, his own account, written with an admiring journalist from his private papers, and it sold. Photographs and documents from the subject's private archive.

    Book
  2. Jeff Maysh. The spy with no name BBC News Magazine, 4 January 2017.

    In 2016 a British writer asked him, in a restaurant off the Old Town Square, whether he had ever felt compassion for Johanna van Haarlem. "I had no pity whatsoever," he said.

    Web
  3. The False Dutchman: the personal file, registration number 39589, cover name GRAGERT The Security Services Archive (Archiv bezpečnostních složek), Prague: Archiválie měsíce, December 2019.

    His personnel file is in the Czech archive now, and part of it has been published. The archive adds, in its own voice, what that organisation was: B'nai B'rith, whose aim was to support the legal emigration of Jews from the Soviet Union, and which the KGB in the 1980s regarded as hostile.

    Archive
  4. Radio Free Europe monitoring transcript of Czechoslovak Radio, 6 March 1989 RFE/RL Czechoslovak Monitoring, bulletin pages 40 and 41; via the Arcanum Digitheca, 6 March 1989.

    Radio Free Europe was listening, and typed it up, and the page survives.

    Archive
  5. Hansard, House of Commons written answers, 9 July 1993, column 297W House of Commons, HC Deb 9 July 1993, vol 228, c297W, 9 July 1993.

    The answer took four sentences and is in the parliamentary record. It uses the false name throughout.

    Archive
  6. Hemligt telegram: a coded telegram from Czechoslovak intelligence, 1982 to 1986 Säkerhetspolisen (the Swedish Security Service), from its archive, 1982 to 1986.

    A station somewhere in Czechoslovakia broadcast a woman's voice reading groups of five numbers. Anyone in Europe with a cheap receiver could hear her.

    Archive
  7. The Sun 28 February 1989.

    The papers called him the man with no name, the spy with no name, Agent Nobody.

    Newspaper
  8. Daily Mirror 4 March 1989.

    The papers called him the man with no name, the spy with no name, Agent Nobody.

    Newspaper
  9. The Times 4 March 1989.

    A senior Scotland Yard officer told a reporter that he was probably the first man ever tried at the Old Bailey under an alias.

    Newspaper
  10. Daily Mail 4 March 1989.

    Johanna gave one interview, to the Daily Mail, the day after the verdict, in tears. In October 1991 the Daily Mail reporter who had covered the trial, Paul Henderson, took her back to Czechoslovakia with a photographer, an interpreter, and Hans.

    Newspaper
  11. Today 4 March 1989.

    The papers called him the man with no name, the spy with no name, Agent Nobody.

    Newspaper
  12. Daily Express April 1988.

    In the first week the Daily Express and the Daily Mail wrote of NATO submarine secrets, of an underwater research centre in the West Country, of a sonar line watching Soviet submarines off Norway.

    Newspaper
  13. The Canberra Times: Dutch national under arrest Trove, National Library of Australia, 5 April 1988.

    Both the Netherlands and Czechoslovakia said they had never heard of him.

    Newspaper
  14. The Canberra Times: Mystery spy jailed for 10 years Trove, National Library of Australia, 5 March 1989.

    The papers called him the man with no name, the spy with no name, Agent Nobody.

    Newspaper
  15. Reform, Budapest Via the Arcanum Digitheca, 2 January 1992.

    At the Czech foreign ministry a consul told her that her son had been adopted by decision of a court and was protected by the adoption laws.

    Newspaper
  16. Népszava, Budapest Szép Szó supplement, page 19; via the Arcanum Digitheca, 22 May 2004.

    The method was as old as the Cold War.

    Newspaper
  17. Népszabadság, Budapest Page 20; via the Arcanum Digitheca, 21 November 2005.

    A Budapest newspaper reported that analysts and historians were learning only now who the mysterious prisoner of 1989 had been.

    Newspaper
  18. Johanna van Haarlem. I Lost My Child Twice 2010.

    She wrote her own instead, in English, under the title I Lost My Child Twice, and it was published in 2010 in Czech, in the country where the boy she lost and the man who had worn his name had both grown up. No English edition has appeared.

    Book

What remains unresolved

  • What was it all about? What was he doing here? What was he interested in? Whose side was he on?
  • Why did she start to care?
  • When a stranger writes "your son" at the bottom of a letter, and means it for ten years, what did she lose, and what did she find?

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