May 2 – Five Graves to Cairo (1943)

During the Second World War, a British corporal goes undercover at the headquarters of Field Marshal Rommel in an effort to uncover the German battle plans for North Africa.

May 9 – I Was a Spy (1933)
A Belgian nurse working in a German hospital becomes a spy for the Allies in this suspenseful melodrama set during the First World War. The story is based on the actual exploits of Belgian spy Martha Cnockhaert.

May 16 – Address Unknown (1944)
An art dealer's (Paul Lukas) infatuation with Nazi politics has severe repercussions on his family and friends. This film is noteworthy for its intriguing storyline, striking sets and unusual cinematography.

May 23 – Saboteur (1942)
Alfred Hitchcock directed this World War II thriller about a man accused of sabotage (Robert Cummings) on a cross-country trek to prove his innocence. The action-packed storyline has our hero chasing Nazi spies from Los Angeles to Boulder Dam to the top of the Statue of Liberty.

May 30 – Emperor's Candlesticks (1937)
In the 1890s, a Polish spy (William Powell) and a Russian spy (Luise Rainer) fall in love while searching for a pair of ornate candlesticks that contain secret messages.