The Spy in Black

The Spy in Black

Year: 1939

Runtime: 82 mins

Language: English

Director: Michael Powell

WarThriller

Today’s U-boat terror makes this the year’s timeliest picture! A German submarine is sent to the Orkney Isles in 1917 to sink the British fleet.

Warning: spoilers below!

Haven’t seen The Spy in Black yet? This summary contains major spoilers. Bookmark the page, watch the movie, and come back for the full breakdown. If you're ready, scroll on and relive the story!

The Spy in Black (1939) – Full Plot Summary & Ending Explained

Read the complete plot breakdown of The Spy in Black (1939), including all key story events, major twists, and the ending explained in detail. Discover what really happened—and what it all means.

In March 1917, Captain Ernst Hardt, Conrad Veidt, a World War I German U-boat commander, is ordered to spy on the British Fleet at Scapa Flow, rendezvousing at the Old Man of Hoy. He sneaks ashore on the Orkney Islands to meet his contact, Fräulein Tiel, Valerie Hobson. Tiel has taken over the identity of a new local schoolteacher, Miss Anne Burnett, June Duprez, whom female German agents had intercepted and chloroformed en route to the island. Hardt finds himself attracted to her, but Tiel shows no interest. The Germans are aided by a disgraced Royal Navy officer, the former Commander Ashington, Sebastian Shaw who, according to Tiel, has agreed to aid the Germans after losing his command due to drunkenness, and Tiel implies that she has slept with Ashington to obtain his cooperation.

The plan is almost disrupted when Burnett’s fiancé, Rev. Harris, arrives unexpectedly, but is taken captive; an intrusive local minister and his wife are also deflected away.

Equipped with the crucial information he needs about the British fleet movements, Hardt rendezvous with his submarine to arrange for a fleet of U-boats to attack a sortie of two Royal Navy squadrons. Returning to the house, and confident that all is going according to plan, Hardt makes a romantic overture to Tiel, but, pulling rank, she rebuffs him. She sneaks out of the house, believing she has locked Hardt in his room, but he leaves and secretly follows her, discovering that she has gone out to meet Ashington.

Hardt overhears them talking and learns they are imposters: the British are aware of his presence, and have turned his mission into a trap for the U-boats. As Jill prepares to leave the island, Blacklock returns to arrest Hardt, only to find he has eluded them. Disguised in Rev. Harris’s clothes, Hardt manages to board the island ferry, which is also carrying Jill, a number of civilian passengers, and eight German POWs. Blacklock reports Hardt’s escape to the base commander, who explains that the British had learned of the Germans’ plan when the real Anne Burnett briefly survived the German agents’ attempt to kill her by throwing her off an oceanside cliff.

At sea, Hardt manages to free the German prisoners and they seize the ferry. The Royal Navy pursue them, but before it can catch up the ferry is intercepted by Hardt’s submarine, and Hardt’s first officer, Lieutenant Felix Schuster, Marius Goring decides to shell it. As the U-boat surfaces and prepares to fire, Hardt realises it is his own submarine. He frantically attempts to signal it, but too late – the U-boat shells the ferry, which begins to sink. British ships then arrive and drop depth charges, destroying the fleeing U-boat. As Jill and the other passengers flee in lifeboats, Hardt realises all is lost and chooses to go down with the ship and join his crew.

Last Updated: October 09, 2025 at 11:09

Mobile App Preview

Coming soon on iOS and Android

The Plot Explained Mobile App

From blockbusters to hidden gems — dive into movie stories anytime, anywhere. Save your favorites, discover plots faster, and never miss a twist again.

Sign up to be the first to know when we launch. Your email stays private — always.

Explore Movie Threads

Discover curated groups of movies connected by mood, themes, and story style. Browse collections built around emotion, atmosphere, and narrative focus to easily find films that match what you feel like watching right now.

Tense World War Espionage Thrillers like The Spy in Black

High-stakes missions behind enemy lines, fueled by paranoia and deception.If you enjoyed the high-stakes deception and paranoia of The Spy in Black, you'll find similar tension in these movies. This collection features other gripping World War I and II spy stories where missions hinge on disguise, double-crosses, and navigating enemy territory. Explore films with a steady, methodical pace and a heavy emotional weight, all centered on the precarious life of an operative.

tensesuspensefulparanoidgrimmethodicalclaustrophobictragic

Narrative Summary

These stories typically follow an agent on a dangerous mission where nothing is as it seems. The plot revolves around a central deception or a trap that is gradually revealed, forcing the protagonist to rely on their wits to survive. The narrative journey is often one of isolation and futility, set against the impersonal machinery of a global conflict.

Why These Movies?

Movies are grouped here because they share a core focus on wartime spycraft, a consistently tense and grim tone, and a plot driven by life-or-death deception. They create a similar viewing experience of suspenseful, methodical pacing where the threat of discovery is ever-present.

Claustrophobic Submarine Warfare Dramas similar to The Spy in Black

Confined crews face relentless pressure and inevitable tragedy beneath the waves.Fans of The Spy in Black's tense submarine sequences and grim naval strategy will appreciate these movies. This list features other films that capture the unique pressure-cooker atmosphere of life aboard a sub during wartime. Discover stories that explore bravery, sacrifice, and the heavy cost of naval conflict, all with a similarly tense and tragic feel.

claustrophobictensegrimsuspensefultragicmethodicalpressure-cooker

Narrative Summary

Narratives in this thread are defined by their confined setting, which amplifies every conflict and mistake. The plot often hinges on a specific mission—a hunt or an escape—that tests the crew's endurance and solidarity. The journey is typically one of gradual attrition, facing unseen threats and the psychological unraveling that comes from extreme confinement and constant danger.

Why These Movies?

These movies are united by their oppressive, claustrophobic settings and the high-tension experience of underwater warfare. They share a grim tone, a focus on naval strategy and survival, and often conclude with a profound sense of sacrifice and futility, mirroring the heavy emotional weight of war.

Unlock the Full Story of The Spy in Black

Don't stop at just watching — explore The Spy in Black in full detail. From the complete plot summary and scene-by-scene timeline to character breakdowns, thematic analysis, and a deep dive into the ending — every page helps you truly understand what The Spy in Black is all about. Plus, discover what's next after the movie.

The Spy in Black Timeline

Track the full timeline of The Spy in Black with every major event arranged chronologically. Perfect for decoding non-linear storytelling, flashbacks, or parallel narratives with a clear scene-by-scene breakdown.

The Spy in Black Timeline

Characters, Settings & Themes in The Spy in Black

Discover the characters, locations, and core themes that shape The Spy in Black. Get insights into symbolic elements, setting significance, and deeper narrative meaning — ideal for thematic analysis and movie breakdowns.

Characters, Settings & Themes in The Spy in Black

The Spy in Black Spoiler-Free Summary

Get a quick, spoiler-free overview of The Spy in Black that covers the main plot points and key details without revealing any major twists or spoilers. Perfect for those who want to know what to expect before diving in.

The Spy in Black Spoiler-Free Summary

More About The Spy in Black

Visit What's After the Movie to explore more about The Spy in Black: box office results, cast and crew info, production details, post-credit scenes, and external links — all in one place for movie fans and researchers.

More About The Spy in Black

Similar Movies to The Spy in Black

Discover movies like The Spy in Black that share similar genres, themes, and storytelling elements. Whether you’re drawn to the atmosphere, character arcs, or plot structure, these curated recommendations will help you explore more films you’ll love.