
In this episode of Strange Spy Facts, we dive into the shadowy world of Simon Emil Koedel, a naturalized American who became one of Nazi Germany’s most effective agents on U.S. soil. Learn how he turned his adopted daughter Marie into the so-called...
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e terms and conditions 21 plus welcome back everybody. So today we're looking at the waterfront Mata Hari. It's a strange one. Just to let you know. It's one of the most overlooked stories from the secret world of espionage. We're going to be looking to a father daughter team that operated right under America's nose in the heart of New York City. The story of Simon Email Codell and a young woman he turned into the waterfront Mata Hari. So take a picture of New York harbor in the late 1930s and early 40s. Liberty ships and freighters crowd the docks, lend lease supplies bound for Britain pile up on the piers. Seamen from every Allied nation pour into the waterfront bars of Brooklyn and Manhattan after their long voyages. The air smells of salt, diesel and cheap whiskey. And somewhere in that haze, a middle aged German American. German born American and his attractive young daughter are collecting secrets that could help sink those very ships. Simon Cadell was born in Wurzburg, Bavaria. He came to the United States in the early 1900s in his 20s, enlisted in the U.S. army, served as a corporal and became a naturalized citizen. During the First World War he had already shown a talent for espionage working for Imperial Germany. After the war, he settled into ordinary American life, at least on the surface. By the 1930s, with the rise of the Nazis, Cordell was back in the game. The out there. Germany's military intelligence service enrolled him as agent A2 00 sorry, agent A 2011. His specialty was American shipping and industrial production. Cordell was patient and methodical. He posed as a concerned citizen, writing letters to congressmen and officials asking detailed questions about defense plants and ports. He haunted the waterfront himself, watching ships load and unload from ferry decks and even from a small fishing boat. But his most effective tool was actually something else. It was his adopted daughter, Marie. Marie Codell was born in Brooklyn in 1918. The Codells had taken her and her brother in his orphans. By the mid-1930s, she was an attractive young woman. So Cordell took her in when he was around 36, 37 at the time. In 1936 when she was 18, Simon arranged for her travel to Germany. There she received training from the Auverg. When she returned to New York the following year. She was ready. Simon began sending Marie into the waterfront bars. Her job was simple and dangerous. Strike up conversations with sailors, buy them drinks, smile, flirt and listen. The men talked about cargo, sailing, dates to destinations. Marie reported everything back to her father. He called her with a mixture of pride and dark humor, the waterfront Mata Hari. After the famous World War I spy who used seduction as her weapon, Marie was very effective. Through the men she dated, she supplied enough information for Simon to produce detailed reports for the German navy. One report covered American ships inspected by the British on suspicion of carrying contraband. Another dealt with the flow of supplies leaving New York for the Allies. Simon himself continued gathering open source material and observing the harbor. Together they built a steady stream of intelligence that reached Berlin long before the US entered the war. Their work was not glamorous. It was repetitive, grubby, and after demeaning and often demeaning from Marie. Later she would claim that her father was abusive and she acted under pressure. Whether that was true or simply a defense strategy, the relationship with the true between the two was clearly complicated. Marie even became involved indirectly with a British sailor by the name of Duncan Scott Ford, whose own later espionage activities in Lisbon led to his execution by the British in 1942. The web of contacts around the Cordals stretched further than most people realized. For years, the pair operated with surprising freedom. American counterintelligence was still finding its feet. The FBI and military authorities were more focused on domestic radical groups. Later on Japanese and German agents. After Pearl harbor, the Codel's activities before December 1941 fell into a legal gray zone. That timing will later save them from the harshest possible penalties. You see, everything began to unrivale in 1944. By then the US was fully at war and security around the ports had tightened. Simon had been ordered out of the Eastern Defense Command in 1943 and had to move to Harpers Ferry, West Virginia on October 23, 1944. Agents arrested him there. Marie was arrested the same day in New York. The charges conspiracy to commit espionage under the peacetime statute. The trial that follows relatively quiet by the standards of wartime spy cases. Simon pleaded guilty. Marie went to trial and was convicted. She claimed she had acted under duress and that her father had physically abused both her and her mother. The court sentenced Simon to 15 years. Marie received seven and a half. Both avoided the possibility of the death penalty that maritime espionage could have brought. Their known spying had happened while the United States was still officially neutral. Simon died actually in 1949. So just a few years after being sentenced and not long after his release or while still in custody. Records differ slightly on the exact circumstances. Marie served her time and then largely disappeared from public view. Their story faded into the background of long wartime spy dramas, the Duquesne Ring, the landing of German saboteurs, the atomic secrets. The waterfront Mata Hari never became a household name. But yet the case matters. It shows how vulnerable American ports were in the years before Pearl harbor, demonstrates the German intelligence preference for patient, low profile agents who used open sources, and also raises uncomfortable questions about the use of family members, especially a young woman in intelligence work. Mary was both instrument and, by her own later account, victim. There's a photograph that sometimes circulates with the story, a newspaper image of Simon and Marie side by side, the caption noting the deep hatred for Britain. The faces look ordinary. That ordinariness is what makes the tales so unsettling. Spies don't always look like the figures in the movies. Sometimes they look like a middle aged man writing letters to his congressman or a young woman laughing with sailors in a Brooklyn bar. Today the waterfront bars are mostly gone, replaced by parks and high rises, the ships that once crowded New York harbor, or museums or pieces or scraps. But the lesson remains. Espionage thrives in the gaps between nations of peace and nations of war, between the public face of a citizen and the private work of an agent, between a father's ambition and a daughter's limited choices. That's the strange spy fact for today. That's it for now.
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Episode Title: The Waterfront Mata Hari: How a Father-Daughter Spy Team Hunted Ships in New York Harbor
Date: August 9, 2026
Host: Circle Of Insight Productions
This episode uncovers the little-known but fascinating true story of a German-American father-daughter spy team, Simon and Marie Codell, who operated in New York Harbor in the lead-up to and early years of World War II. Nicknamed the "Waterfront Mata Hari," Marie played a pivotal role in intelligence gathering that threatened Allied shipping, revealing vulnerabilities in American counter-espionage efforts and raising difficult questions about coercion, agency, and family loyalty in the world of espionage.
“Cordell was patient and methodical. He posed as a concerned citizen, writing letters to congressmen… haunting the waterfront himself… observing the harbor.” — Host [01:50]
"Marie reported everything back to her father. He called her with a mixture of pride and dark humor, the waterfront Mata Hari." — Host [03:12]
"She claimed she had acted under duress and that her father had physically abused both her and her mother." — Host [05:03]
"The web of contacts around the Cordals stretched further than most people realized." — Host [04:04]
Legal Gray Zone: US intelligence was not fully prepared for German espionage, and pre-war activity left many cases in a legal limbo post-Pearl Harbor.
"After Pearl harbor, the Codel's activities before December 1941 fell into a legal gray zone. That timing will later save them from the harshest possible penalties." — Host [04:34]
Arrest and Sentencing:
"Espionage thrives in the gaps between nations of peace and nations of war, between the public face of a citizen and the private work of an agent, between a father's ambition and a daughter's limited choices." — Host [06:22]
On the Setting:
“Take a picture of New York harbor in the late 1930s and early 40s… Seamen from every Allied nation pour into the waterfront bars of Brooklyn and Manhattan… Somewhere in that haze, a middle-aged German-born American and his attractive young daughter are collecting secrets that could help sink those very ships.” — Host [00:43]
On Marie’s Role:
“Her job was simple and dangerous. Strike up conversations with sailors, buy them drinks, smile, flirt and listen.” — Host [02:58]
On Moral Ambiguity:
“Mary was both instrument and, by her own later account, victim.” — Host [06:18]
Closing Reflection:
“That ordinariness is what makes the tale so unsettling. Spies don't always look like figures in the movies… The lesson remains. Espionage thrives in the gaps between nations of peace and nations of war…” — Host [06:31]
This haunting episode reveals how family, routine social spaces, and seemingly mundane individuals took center stage in the dangerous game of WWII intelligence. The story of Simon and Marie Codell—a tale of secrecy, manipulation, and ambiguous victimhood—serves as a cautionary illustration of how espionage exploits everyday life and personal relationships, and how its shadows linger long after the events fade from public memory.