Bait

"Bait" is the thirteenth episode of the first series of Secret Army.

Plot
The population of Brussels is compelled to celebrate the Fuhrer's birthday, and Café Candide is obliged to hang a Nazi flag outside. An airman finds refuge with Catherine Bidout, an elderly Englishwoman whom the Germans have not interned in the hope she would lead them to the resistance. Gossip concerning her situation reaches Albert, and he investigates. Madame Bidout is frightened and seeks help from Brandt - who was a childhood a friend of her late son. However it transpires that the hidden man is really another German plant. Brandt is forced to persuade the woman to seek help from the resistance, and a photograph of Brandt with her son risks his exposure for helping the enemy.