Second Bureau is a 1936 British spy romance film directed by Victor Hanbury and starring Marta Labarr, Charles Oliver and Arthur Wontner. It was made at Shepperton Studios and based on a novel Second Bureau by Charles RobertDumas. It was a remake of a 1935 French film of the same name.
A French spy, Captain Paul Benoit, manages to steal some German secrets. The Germans send Erna Fielder, an agent of their own, after him, but the two spies end up falling in love.
Source: Wikipedia