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Agent 355

Unidentified female American spy

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About Agent 355

Agent 355 was an American spy.

355 (died after 1780) was the supposed code name of a female spy during the American Revolution who was part of the Culper Ring spy network. She was one of the first spies for the United States, but her real identity is unknown. The number 355 could be decrypted from the system the Culper Ring used to mean "lady." Her story is considered part of national myth, as there is very little evidence that 355 even existed, although many continue to assert that she was a real historical figure.

Biography The only direct reference to 355 in any of the Culper Ring's missives (1778–1780) appears in a letter from Abraham Woodhull ("Samuel Culper Sr.") to General George Washington, Utilizing her discretion and resourcefulness, Agent 355 transmitted vital information to her handlers, enabling General George Washington to make informed decisions that often proved decisive on the battlefield. Although barred from military service, women actively contributed to the war efforts through espionage. When British soldiers lodged in colonial homes, some women seized the opportunity to gather intelligence, capitalizing on loose lips. Often, these female spies proved more adept at concealing their activities and achieving success than their male counterparts.

While the true identity of 355 remains unknown, some facts about her seem clear. She worked with the American Patriots during the Revolutionary War as a spy, and was likely recruited by Woodhull into the spy ring.

Another theory is that 355 may have been Robert Townsend's common-law wife. John Burke and Andrea Meyer have made a different case for 355's involvement in the spy ring, using circumstantial evidence that she may have been close to Major John André and also to Benjamin Tallmadge, thereby protecting Woodhull from accusations of being a spy. Other possible candidates for 355 include Sarah Horton Townsend and Elizabeth Burgin.

It is also occasionally believed that there was no Agent 355 at all, but rather that the code indicated a woman who had useful information but was not "formally connected to the ring." The code itself may have referred to "a woman", not an agent who was a woman.

355 is thought to have played a major role in exposing Arnold as a defector and in the arrest of André, who was hanged in Tappan, New York.

The then pregnant 355 was arrested in 1780 when Benedict Arnold defected to the Loyalists. However, Alexander Rose disagrees with this narrative, stating that "females were not kept aboard prison ships," and that "there's no record whatsoever of a birth." Strengthening the idea that Agent 355 may have been Anna Strong is the fact that Anna's husband, Selah Strong, was imprisoned on Jersey and she was supposedly allowed to bring him food. Her presence on the ship may have led to the legend that Agent 355 was herself imprisoned there. She is part of a fictionalized Culper Ring that has remained active into modern times. Idara Victor plays fictional Agent 355 in the television series Turn: Washington's Spies. In the show, Agent 355 is the code name of a former slave named Abigail. In Season 4, Episode 6 (Identity Crisis) of the US TV show White Collar, the show's main characters investigate a Culper Ring conspiracy theory based on letters owned by a descendant of 355. Rebel Spy by Veronica Rossi, a young adult novel reimagining the story behind Agent 355, was published in 2020. The 355 is a female-led spy film released by Universal Pictures on January 7, 2022. A group of women from different international spy agencies create a faction code-named 355 in honor of Agent 355.

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Important facts

Occupation
Spy
Nationality

Frequently asked questions

Who was Agent 355?

unidentified female American spy

What was Agent 355's occupation?

Agent 355 was a spy.

What nationality was Agent 355?

Agent 355 was American.

Sources & further reading

· Wikipedia: Agent 355

· Wikidata: Q4692063

· DBpedia: Agent 355

Cite this page

APA: Biography.guide. (2026). Agent 355. https://biography.guide/agent-355/

MLA: "Agent 355." Biography.guide, https://biography.guide/agent-355/.

Chicago: "Agent 355." Biography.guide. https://biography.guide/agent-355/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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