Françoise Brille's debut.
Marie-Claire Chantraine's debut.
"La cage aux souris" (literally, the cage of rats) is a sort of play with words, in which «rats» is the French pejorative slang for «girls». That was lost in the Belgian French title, "La souricière" that translates directly to «mousetrap». The rarity of this movie results from it's distribution being limited to France and Belgium in 1954 theaters, and probably not anywhere else.