Yellow Canary is a 1943 British drama film directed by Herbert Wilcox and starring Anna Neagle, Richard Greene and Albert Lieven.

[4] In the Second World War, Sally Maitland appears to signal Nazi planes during a bombing raid over London, after murdering an innocent citizen in his home.

Two of her fellow passengers, Jim Garrick and Polish officer Jan Orlock, seek her acquaintance, despite her long-time and well-known admiration for Nazi Germany.

The leader reveals that one of the ships of an incoming convoy has been secretly replaced by another filled with explosives, which is to be detonated when they reach Halifax, wrecking the vital port; a plan inspired by a devastating accident of the First World War.

At this point, Jan reveals he is anxious to make up for a recent bungled secret mission to bomb British royalty which failed due to his contact man sending incorrect landmark signals to the bombers.

Orlock orders Sally to telephone Jim and tell him that an attempt will be made to sabotage the Queen Mary, scheduled to sail later that night, and that all available agents should be immediately sent to stop it.

[6] In production during 1943, while the United Kingdom was still fearful of Nazi spies, Yellow Canary was obviously made as wartime propaganda, with the aim not only of keeping up morale but also of warning the British public to be on their guard.

All of the location sequences of Halifax were strictly "B" roll,[clarification needed] but did provide a realistic, "atmospheric" look at wartime conditions in the busy Canadian military and civilian port.

[4] Although the leading actors in Yellow Canary were well received by critics, the convoluted storyline was considered implausible when reviewed by The New York Times.